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洋金花葉化學(xué)成分及其抗炎活性研究

2022-07-22 09:08劉艷榮曉惠譚金燕潘娟管偉匡海學(xué)楊炳友
中成藥 2022年6期
關(guān)鍵詞:分子式硅膠粉末

劉艷榮曉惠譚金燕潘娟管偉匡海學(xué)楊炳友*

(1.黑龍江中醫(yī)藥大學(xué),教育部北藥基礎(chǔ)與應(yīng)用研究重點(diǎn)實(shí)驗(yàn)室,黑龍江 哈爾濱150040; 2.山西中醫(yī)藥大學(xué),山西 晉中030619)

洋金花Datura metelL.為茄科曼陀羅屬植物,始載于《本草綱目》,其花入藥,具有定喘,祛風(fēng),麻醉止痛的功效[1],藥用歷史悠久,臨床應(yīng)用廣泛,但其生長周期長、產(chǎn)量低造成資源緊張。洋金花葉具有抗炎[2]、抗菌、抗氧化[3]、抑制免疫[4]等多種生物活性,并含可治療銀屑病的醉茄內(nèi)酯類成分,其含量約為洋金花中的3.5倍[5]。為了充分利用洋金花植物資源,本實(shí)驗(yàn)對洋金花葉化學(xué)成分及抗炎活性進(jìn)行研究,共分離鑒定出28 個(gè)化合物,其中化合物15~17、20、23、28 為首次從該茄科植物中分離得到,2、19、24、27 首次從曼陀羅屬植物中分離得到,9、20 表現(xiàn)出抗炎活性。

1 材料

Waters 2695-2998-2414 分析高效液相色譜儀(美國Waters 公司);CBM-20A 半制備HPLC 色譜儀(日本島津公司);Bruker-400/600 超導(dǎo)核磁共振光譜儀(德國Bruker 公司);UHPLC-Orbitrap-MS 質(zhì)譜系統(tǒng)(美國Thermo Fisher Scientific 公司);旋轉(zhuǎn)蒸發(fā)儀(日本東京理化器械株式會(huì)社);Sepacore 型中壓液相色譜儀(瑞士Buchi 公司)。GF254 型薄層硅膠(煙臺江友硅膠開發(fā)有限公司);柱層色譜用硅膠(80~100、200~300目,青島海洋化工廠);柱用ODS(12 nm,s-50 μm,日本YMC 公司)。RAW264.7 細(xì)胞系(武漢大學(xué)細(xì)胞保藏中心);FBS 胎牛血清(以色列BI 公司);LPS(美國Sigma 公司)。洋金花葉于2017 年9 月采收于哈爾濱雙城區(qū),經(jīng)黑龍江中醫(yī)藥大學(xué)藥學(xué)院藥用植物教研室樊銳鋒教授鑒定為茄科曼陀羅屬植物白花曼陀羅Datura metelL.的葉,標(biāo)本(20170901)保存于黑龍江中醫(yī)藥大學(xué)中藥化學(xué)教研室。色譜層析用分析純試劑(天津試劑一廠);色譜純甲醇(德國Merck 公司)。

2 提取與分離

將20 kg 干燥洋金花葉以8 倍量70% 乙醇回流提取3次,每次2 h,濾過,合并提取液,減壓濃縮得70%乙醇總提物4.82 kg,經(jīng)HP-20 大孔吸附樹脂,分別用水、30%乙醇、95%乙醇洗脫后減壓濃縮,分別得水洗脫組分930 g、30%乙醇洗脫組分1 195 g、95%乙醇洗脫組分1 894 g。

取30%乙醇洗脫組分400 g,經(jīng)硅膠柱[二氯甲烷-甲醇(1∶0~0∶1)]梯度洗脫,洗脫液濃縮后經(jīng)TLC 薄層檢識,得到Fr.A~Fr.I 流分。其中,F(xiàn)r.B 經(jīng)硅膠柱、半制備型HPLC(甲醇-水,58∶42,3 mL/min)得化合物15(21.8 mg,tR=43.1 min);Fr.D 經(jīng)硅膠柱、ODS 柱、半制備型HPLC(甲醇-水,60∶40,3 mL/min)得化合物16(3.1 mg,tR=18.8 min)、23(2.1 mg,tR=19.3 min);Fr.F 經(jīng)硅膠柱、半制備型HPLC(甲醇-水,40∶60,3 mL/min)得化合物25(2.6 mg,tR=15.4 min)、27(3.3 mg,tR=14.8 min)、28(4.3 mg,tR=15.2 min);Fr.G 經(jīng)硅膠柱、ODS 柱、半制備型HPLC(甲醇-水,35∶65,3 mL/min)得化合物24(2.4 mg,tR=16.4 min);Fr.H 經(jīng)硅膠柱、半制備型HPLC(甲醇-水,50∶50,3 mL/min)得化合物22(1.9 mg,tR=15.6 min)。

取95%乙醇洗脫組分400 g,經(jīng)硅膠柱[二氯甲烷-甲醇(100∶1~0∶1)]梯度洗脫,洗脫液濃縮后經(jīng)TLC 薄層檢識,得到Fr.A~Fr.F 流分。其中,F(xiàn)r.B 經(jīng)硅膠柱、半制備型HPLC(甲醇-水,60∶40,3 mL/min)得化合物1(20.2 mg,tR=45.2 min)、2(2.5 mg,tR=40.8 min);Fr.D 經(jīng)硅膠柱、ODS 柱、半制備型HPLC(甲醇-水,65∶35,3 mL/min)得化合物3(30.1 mg,tR=45.9 min)、8(2.5 mg,tR=40.5 min)、10(12.9 mg,tR=47.2 min)、11(14.8 mg,tR=41.9 min)、12(22.6 mg,tR=43.6 min)、14(16.8 mg,tR=49.6 min)、18(2.8 mg,tR=38.3 min)、20(2.2 mg,tR=36.2 min)、21(15.0 mg,tR=34.6 min);Fr.E 經(jīng)硅膠柱、ODS 柱、半制備型HPLC(甲醇-水,60∶40,3 mL/min)得化合物4(7.0 mg,tR=44.4 min)、6(4.1 mg,tR=45.9 min)、7(2.3 mg,tR=48.0 min)、13(7.8 mg,tR=49.9 min)、17(2.1 mg,tR=42.3 min)、19(1.0 mg,tR=38.1 min);Fr.F 經(jīng)硅膠柱、半制備型HPLC(甲醇-水,65∶35,3 mL/min)得化合物5(4.1 mg,tR=44.3 min)、9(3.2 mg,tR=49.4 min)、26(0.7 mg,tR=50.4 min)。

3 結(jié)構(gòu)鑒定

化合物1:白色無定形粉末(甲醇),分子式C28H38O5;HR-ESI-MSm/z477.260 6 [M +Na]+。1H-NMR(CD3OD,400 MHz)δ:6.92(1H,ddd,J=10.4,5.2,2.8 Hz,H-3),5.85(1H,m,H-2),5.79(1H,dd,J=6.0,2.0 Hz,H-6),4.47(1H,dt,J=13.2,3.2 Hz,H-22),4.38(1H,d,J=11.6 Hz,H-27a),4.31(1H,d,J=11.6 Hz,H-27b),3.79(1H,t,J=4.4 Hz,H-7),3.41(1H,br.d,J=21.2 Hz,H-4a),2.94(1H,dd,J=21.2,5.2 Hz,H-4b),2.56(1H,dd,J=18.0,13.2 Hz,H-23a),2.23(1H,m,H-11a),2.20(1H,dd,J=18.0,3.2 Hz,H-23b),2.10(3H,s,H-28),1.99(3H,m,H-9,12a,20),1.81(2H,m,H-15a,16a),1.60(1H,m,H-11b),1.45(1H,m,H-8),1.40(1H,m,H-16b),1.35(1H,m,H-12b),1.30(2H,m,H-14,17),1.25(3H,s,H-19),1.19(1H,m,H-15b),1.06(3H,d,J=6.8 Hz,H-21),0.79(3H,s,H-18);13C-NMR(CD3OD,100 MHz)δ:205.6(C-1),168.6(C-26),157.9(C-24),147.6(C-3),141.6(C-5),128.4(C-2),127.5(C-6),126.4(C-25),80.2(C-22),64.8(C-7),56.4(C-27),53.2(C-17),52.3(C-10),51.0(C-14),43.5(C-13),40.8(C-12),40.5(C-20),39.5(C-8),36.4(C-9),34.4(C-4),30.7(C-23),28.2(C-16),25.0(C-15),24.6(C-11),20.2(C-28),18.7(C-19),13.7(C-21),12.1(C-18)。與文獻(xiàn)[6]報(bào)道一致,故鑒定為 7,27-dihydroxy-1-oxowitha-2,5,24-trienolide。

化合物2:白色無定形粉末(甲醇),分子式C28H40O6;HR-ESI-MSm/z495.271 5 [M+Na]+。1HNMR(CD3OD,400 MHz)δ:6.65(1H,ddd,J=10.4,5.2,2.4 Hz,H-3),5.77(1H,dd,J=10.4,2.4 Hz,H-2),4.46(1H,dt,J=13.2,3.2 Hz,H-22),4.38(1H,d,J=11.6 Hz,H-27a),4.31(1H,d,J=11.6 Hz,H-27b),3.52(1H,t,J=2.8 Hz,H-6),3.26(1H,dt,J=20.0,2.8 Hz,H-4a),2.55(1H,dd,J=17.6,13.6 Hz,H-23a),2.20(1H,dd,J=17.6,2.8 Hz,H-23b),2.20(1H,overlap,H-11a),2.10(3H,s,H-28),2.04(1H,dd,J=20.0,5.0 Hz,H-4b),1.97(2H,m,H-12a,20),1.78(3H,m,H-9,15a,16a),1.67(2H,m,H-7a,8),1.54(1H,m,H-7b),1.40(1H,m,H-15b),1.38(1H,m,H-16b),1.36(2H,m,H-11b,12b),1.30(3H,s,H-19),1.27(1H,m,H-17),1.20(1H,m,H-14),1.04(3H,d,J=6.8 Hz,H-21),0.80(3H,s,H-18);13CNMR(CD3OD,100 MHz)δ:207.6(C-1),168.6(C-26),157.9(C-24),143.8(C-3),129.0(C-2),126.4(C-25),80.2(C-22),78.3(C-5),75.3(C-6),57.1(C-14),56.4(C-27),53.4(C-17),53.0(C-10),44.2(C-13),42.6(C-9),41.5(C-12),40.5(C-20),36.6(C-4),34.1(C-7),31.4(C-8),30.7(C-23),28.2(C-16),25.4(C-15),24.5(C-11),20.2(C-28),16.2(C-19),13.7(C-21),12.7(C-18)。與文獻(xiàn)[7]報(bào)道一致,故鑒定為acnistoferin。

化合物3:白色無定形粉末(甲醇),分子式C28H42O6;HR-ESI-MSm/z497.287 1 [M+Na]+。1HNMR(CD3OD,400 MHz)δ:5.71(1H,d,J=5.3 Hz,H-6),4.47(1H,dt,J=13.2,3.4 Hz,H-22),4.38(1H,d,J=11.7 Hz,H-27a),4.31(1H,d,J=11.7 Hz,H-27b),3.91(1H,m,H-3),3.82(1H,s,H-1),3.72(1H,t,J=3.8 Hz,H-7),2.54(1H,dd,J=17.9,13.4 Hz,H-23a),2.33(2H,m,H-4),2.20(1H,dd,J=17.9,3.4 Hz,H-23b),2.10(3H,s,H-28),2.00(3H,m,H-2a,12a,20),1.90(1H,m,H-8),1.82(2H,m,H-15a,16a),1.72(1H,m,H-2b),1.57(2H,m,H-11a,14),1.53(1H,m,H-11b),1.45(1H,m,H-9),1.41(1H,m,H-16b),1.25(2H,m,H-12b,15b),1.19(1H,m,H-17),1.04(3H,d,J=6.6 Hz,H-21),1.01(3H,s,H-19),0.78(3H,s,H-18);13C-NMR(CD3OD,100 MHz)δ:168.6(C-26),157.9(C-24),144.3(C-5),127.3(C-6),126.4(C-25),80.2(C-22),73.5(C-1),66.7(C-3),65.9(C-7),56.4(C-27),53.2(C-17),50.7(C-14),43.7(C-13),43.3(C-10),42.4(C-4),40.5(C-12),40.4(C-20),39.1(C-2),38.9(C-9),35.1(C-8),30.7(C-23),28.3(C-16),25.1(C-15),21.0(C-11),20.2(C-28),18.8(C-19),13.8(C-21),12.0(C-18)。與文獻(xiàn) [4 ]報(bào)道一致,故鑒定為baimantuoluoline K。

化合物4:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C35H52O11;HR-ESI-MSm/z671.340 0 [M+Na]+。1H-NMR(CD3OD,600 MHz)δ:5.72(1H,d,J=4.3 Hz,H-6),4.62(1H,d,J=11.2 Hz,H-27a),4.49(1H,dt,J=13.4,3.4 Hz,H-22),4.46(1H,d,J=11.2 Hz,H-27b),4.32(1H,d,J=7.8 Hz,H-1′),3.85(2H,m,H-3,6′a),3.72(1H,m,H-7),3.67(1H,dd,J=11.9,5.5 Hz,H-6′b),3.32(1H,m,H-3′),3.27(1H,m,H-4′),3.28(3H,s,3-OCH3),3.24(1H,m,H-5′),3.16(1H,t,J=8.1 Hz,H-2′),2.99(1H,dd,J=14.0,3.5 Hz,H-2a),2.87(1H,brd,J=14.9 Hz,H-4a),2.57(1H,dd,J=18.0,13.6 Hz,H-23a),2.51(2H,m,H-2b,4b),2.22(1H,dd,J=18.0,3.2 Hz,H-23b),2.13(3H,s,H-28),2.00(1H,m,H-9),1.98(2H,m,H-12a,20),1.84(3H,m,H-11a,15a,16a),1.55(1H,m,H-14),1.45(1H,m,H-11b),1.41(1H,m,H-8),1.38(1H,m,H-16b),1.30(3H,s,H-19),1.28(2H,m,H-12b,17),1.19(1H,m,H-15b),1.04(3H,d,J=6.6 Hz,H-21),0.77(3H,s,H-18);13C-NMR(CD3OD,150 MHz)δ:212.9(C-1),168.6(C-26),160.4(C-24),142.9(C-5),128.4(C-6),123.6(C-25),104.0(C-1′),80.2(C-22),78.3(C-3),78.0(C-3′,5′),75.0(C-2′),71.6(C-4′),65.2(C-7),63.6(C-27),62.7(C-6′),56.2(3-OCH3),55.4(C-10),53.2(C-17),50.8(C-14),43.7(C-2,13),40.6(C-12),40.4(C-20),38.7(C-8),36.7(C-4),36.0(C-9),30.8(C-23),28.2(C-16),25.0(C-15),23.5(C-11),20.7(C-28),19.2(C-19),13.7(C-21),12.1(C-18)。與文獻(xiàn) [2]報(bào)道一致,故鑒定為daturafoliside G。

化合物5:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C38H58O11;HR-ESI-MSm/z713.387 1 [M+Na]+。1H-NMR(CD3OD,600 MHz)δ:5.73(1H,d,J=5.6 Hz,H-6),4.63(1H,d,J=11.2 Hz,H-27a),4.52(1H,m,H-22),4.47(1H,d,J=11.2 Hz,H-27b),4.33(1H,d,J=7.8 Hz,H-1′),3.94(1H,t,J=2.9 Hz,H-3),3.86(1H,dd,J=11.9,1.7 Hz,H-6′a),3.74(1H,t,J=3.8 Hz,H-7),3.68(1H,dd,J=11.9,5.4 Hz,H-6′b),3.43(1H,m,H-1″a),3.40(1H,m,H-3′),3.34(1H,m,H-1″b),3.28(2H,m,H-4′,5′),3.17(1H,t,J=7.8 Hz,H-2′),2.98(1H,dd,J=13.9,3.7 Hz,H-2a),2.87(1H,br.d,J=14.8 Hz,H-4a),2.58(1H,dd,J=17.8,13.8 Hz,H-23a),2.48(2H,m,H-2b,4b),2.23(1H,dd,J=17.8,2.9 Hz,H-23b),2.14(3H,s,H-28),2.03(1H,m,H-9),2.00(1H,m,H-20),1.98(1H,m,H-12a),1.83(3H,m,H-11a,15a,16a),1.56(1H,m,H-14),1.49(1H,m,H-2″a),1.46(1H,m,H-11b),1.45(2H,m,H-8,2″b),1.40(1H,m,H-16b),1.36(1H,m,H-3″a),1.32(2H,m,H-3″b,12b),1.31(3H,s,H-19),1.25(1H,m,H-17),1.20(1H,m,H-15b),1.05(3H,d,J=6.6 Hz,H-21),0.92(3H,t,J=7.4 Hz,H-4″),0.78(3H,s,H-18);13C-NMR(CD3OD,150 MHz)δ:213.2(C-1),168.6(C-26),160.4(C-24),143.0(C-5),128.3(C-6),123.6(C-25),104.0(C-1′),80.2(C-22),78.0(C-3′,5′),76.8(C-3),75.0(C-2′),71.6(C-4′),69.5(C-1″),65.3(C-7),63.6(C-27),62.7(C-6′),55.4(C-10),53.1(C-17),50.8(C-14),44.2(C-2),43.7(C-13),40.5(C-12),40.4(C-20),38.6(C-8),37.1(C-4),36.1(C-9),32.8(C-2″),30.8(C-23),28.2(C-16),25.0(C-15),23.4(C-11),20.7(C-28),20.3(C-3″),19.1(C-19),14.2(C-4″),13.7(C-21),12.1(C-18)。與文獻(xiàn)[2]報(bào)道一致,故鑒定為daturafoliside H。

化合物6:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C34H48O10;HR-ESI-MSm/z639.313 9 [M+Na]+。1H-NMR(CD3OD,600 MHz)δ:6.08(1H,dd,J=9.7,1.9 Hz,H-4),5.78(1H,m,H-3),5.52(1H,d,J=2.2 Hz,H-6),4.62(1H,d,J=11.2 Hz,H-27a),4.50(1H,dt,J=13.3,3.4 Hz,H-22),4.46(1H,d,J=11.2 Hz,H-27b),4.32(1H,d,J=8.0 Hz,H-1′),3.85(1H,dd,J=11.9,2.0 Hz,H-6′a),3.79(1H,d,J=8.3 Hz,H-7),3.67(1H,dd,J=11.9,5.4 Hz,H-6′b),3.41(1H,m,H-3′),3.26(2H,m,H-4′,5′),3.16(1H,t,J=8.0 Hz,H-2′),2.68(1H,dd,J=20.0,4.7 Hz,H-2a),2.57(1H,dd,J=18.0,13.3 Hz,H-23a),2.21(1H,dd,J=18.0,3.4 Hz,H-23b),2.13(3H,s,H-28),1.98(2H,m,H-12a,20),1.96(1H,m,H-2b),1.88(3H,m,H-11,15a),1.81(2H,m,H-9,16a),1.52(2H,m,H-8,11b),1.42(3H,s,H-19),1.40(2H,m,H-15b,16b),1.34(1H,m,H-12b),1.29(1H,m,H-14),1.24(1H,m,H-17),1.04(3H,d,J=6.6 Hz,H-21),0.80(3H,s,H-18);13C-NMR(CD3OD,150 MHz)δ:212.1(C-1),168.6(C-26),160.3(C-24),143.4(C-5),131.7(C-6),129.5(C-4),125.6(C-3),123.7(C-25),104.0(C-1′),80.2(C-22),78.0(C-3′,5′),75.0(C-2′),72.4(C-7),71.6(C-4′),63.6(C-27),62.7(C-6′),57.1(C-14),53.2(C-10),52.7(C-17),44.7(C-13),41.4(C-8),41.1(C-9),40.8(C-2),40.7(C-12),40.4(C-20),30.8(C-23),28.5(C-16),27.4(C-15),23.8(C-11),20.8(C-28),20.5(C-19),13.8(C-21),12.4(C-18)。與文獻(xiàn)[2]報(bào)道一致,故鑒定為daturafoliside I。

化合物7:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C35H50O10;HR-ESI-MSm/z653.332 7 [M+Na]+。1H-NMR(CD3OD,600 MHz)δ:6.08(1H,dd,J=9.9,2.5 Hz,H-7),5.71(1H,br.s,H-6),5.69(1H,br.s,H-4),4.63(1H,d,J=11.3 Hz,H-27a),4.49(1H,m,H-22),4.46(1H,d,J=11.3 Hz,H-27b),4.32(1H,d,J=7.8 Hz,H-1′),4.31(1H,m,H-3),3.86(1H,dd,J=12.0,2.1 Hz,H-6′a),3.67(1H,dd,J=12.0,5.2 Hz,H-6′b),3.35(3H,s,3-OCH3),3.34(1H,m,H-3′),3.28(1H,m,H-4′),3.24(1H,m,H-5′),3.15(1H,t,J=7.8 Hz,H-2′),3.01(1H,dd,J=13.4,5.8 Hz,H-2a),2.56(1H,m,H-23a),2.55(1H,m,H-2b),2.23(1H,m,H-23b),2.15(1H,m,H-8),2.12(3H,s,H-28),2.01(1H,m,H-12a),2.00(1H,m,H-20),1.83(2H,m,H-15a,16a),1.67(1H,m,H-11a),1.52(1H,m,H-9),1.44(1H,m,H-16b),1.43(1H,m,H-11b),1.33(1H,m,H-15b),1.29(1H,m,H-14),1.28(1H,m,H-17),1.26(1H,m,H-12b),1.19(3H,s,H-19),1.02(3H,d,J=6.6 Hz,H-21),0.81(3H,s,H-18);13C-NMR(CD3OD,150 MHz)δ:214.1(C-1),168.6(C-26),160.3(C-24),144.9(C-5),132.7(C-6),128.3(C-7),125.8(C-4),123.6(C-25),104.0(C-1′),80.0(C-22),78.0(C-3′,5′),77.1(C-3),75.0(C-2′),71.6(C-4′),63.6(C-27),62.7(C-6′),56.2(3-OMe),55.1(C-14),53.0(C-17),50.4(C-10),47.0(C-9),44.9(C-13),44.7(C-2),40.8(C-12),40.4(C-20),38.4(C-8),30.8(C-23),28.2(C-16),25.1(C-15),23.8(C-11),20.7(C-28),18.1(C-19),13.6(C-21),12.3(C-18)。與文獻(xiàn)[5]報(bào)道一致,故鑒定為daturafoliside R。

化合物8:白色無定形粉末(甲醇),分子式C28H38O6;HR-ESI-MSm/z493.255 8 [M+Na]+。1HNMR(CD3OD,600 MHz)δ:7.07(1H,dd,J=9.6,6.0 Hz,H-3),6.23(1H,J=6.0 Hz,H-4),5.96(1H,d,J=9.6 Hz,H-2),4.45(1H,dt,J=13.4,3.4 Hz,H-22),4.37(1H,d,J=11.8 Hz,H-27a),4.30(1H,d,J=11.8 Hz,H-27b),4.22(1H,d,J=3.2 Hz,H-6),3.73(1H,t,J=2.8 Hz,H-7),2.52(1H,dd,J=18.0,13.4 Hz,H-23a),2.16(1H,dd,J=18.0,3.4 Hz,H-23b),2.08(3H,s,H-28),2.06(1H,m,H-8),2.00(1H,m,H-12a),1.96(2H,m,H-11a,20),1.79(2H,m,H-15a,16a),1.57(3H,m,H-9,11b,14),1.43(3H,s,H-19),1.43(1H,overlap,H-16b),1.28(1H,m,H-15b),1.26(1H,m,H-17),1.14(1H,m,H-12b),1.03(3H,d,J=6.7 Hz,H-21),0.84(3H,s,H-18);13C-NMR(CD3OD,150 MHz)δ:208.7(C-1),168.5(C-26),157.8(C-24),157.4(C-5),142.4(C-3),126.7(C-2),126.4(C-25),122.1(C-4),80.1(C-22),79.2(C-6),73.7(C-7),56.4(C-27),55.2(C-10),53.1(C-17),51.3(C-14),43.8(C-13),42.6(C-9),40.6(C-12),40.4(C-20),36.4(C-8),30.7(C-23),28.2(C-16),24.8(C-15),22.5(C-11),20.2(C-28),19.9(C-19),13.6(C-21),12.1(C-18)。與文獻(xiàn)[5]報(bào)道一致,故鑒定為daturafoliside S。

化合物9:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C34H48O9;HR-ESI-MSm/z623.319 2 [M+Na]+。1H-NMR(CD3OD,600 MHz)δ:6.91(1H,ddd,J=10.0,4.9,2.4 Hz,H-3),5.83(1H,dd,J=10.0,2.4 Hz,H-2),5.62(1H,d,J=5.8 Hz,H-6),4.63(1H,d,J=11.2 Hz,H-27a),4.49(1H,m,H-22),4.47(1H,d,J=11.2 Hz,H-27b),4.33(1H,d,J=7.8 Hz,H-1′),3.86(1H,dd,J=12.0,2.0 Hz,H-6′a),3.68(1H,dd,J=12.0,5.4 Hz,H-6′b),3.35(2H,m,H-4a,3′),3.27(2H,m,H-4′,5′),3.17(1H,t,J=8.1 Hz,H-2′),2.88(1H,dd,J=21.4,4.9 Hz,H-4b),2.58(1H,dd,J=18.1,13.6 Hz,H-23a),2.23(1H,dd,J=18.1,3.1 Hz,H-23b),2.18(1H,m,H-11a),2.14(3H,s,H-28),2.03(1H,m,H-12a),2.02(1H,m,H-7a),1.97(1H,m,H-20),1.80(2H,m,H-9,16a),1.68(1H,m,H-15a),1.59(1H,m,H-11b),1.58(1H,m,H-7b),1.47(1H,m,H-8),1.38(2H,m,H-12b,16b),1.28(1H,m,H-14),1.26(3H,s,H-19),1.17(2H,m,H-15b,17),1.05(3H,d,J=6.6 Hz,H-21),0.80(3H,s,H-18);13C-NMR(CD3OD,150 MHz)δ:206.7(C-1),168.6(C-26),160.3(C-24),148.1(C-3),137.4(C-5),128.3(C-2),125.7(C-6),123.6(C-25),104.0(C-1′),80.1(C-22),78.0(C-3′,5′),75.0(C-2′),71.6(C-4′),63.6(C-27),62.8(C-6′),57.6(C-14),53.3(C-17),51.8(C-10),44.5(C-9),43.8(C-13),41.0(C-12),40.4(C-20),34.5(C-4),34.4(C-8),31.9(C-7),30.8(C-23),28.2(C-16),25.4(C-15),24.9(C-11),20.8(C-28),19.5(C-19),13.8(C-21),12.4(C-18)。與文獻(xiàn)[8]報(bào)道一致,故鑒定為daturametelin A。

化合物10:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C34H48O10;HR-ESI-MSm/z639.314 1 [M+Na]+。1H-NMR(CD3OD,400 MHz)δ:6.14(1H,dd,J=10.0,1.9 Hz,H-4),5.83(1H,m,H-3),5.79(1H,d,J=5.5 Hz,H-6),4.63(1H,d,J=11.2 Hz,H-27a),4.50(1H,m,H-22),4.47(1H,d,J=11.2 Hz,H-27b),4.32(1H,d,J=7.8 Hz,H-1′),3.90(1H,m,H-7),3.85(1H,dd,J=11.9,2.0 Hz,H-6′a),3.67(1H,dd,J=11.9,5.2 Hz,H-6′b),3.40(1H,m,H-5′),3.28(2H,m,H-3′,4′),3.16(1H,t,J=7.8 Hz,H-2′),2.71(1H,dd,J=20.4,4.3 Hz,H-2),2.58(1H,dd,J=18.0,13.5 Hz,H-23a),2.23(1H,dd,J=18.0,3.2 Hz,H-23b),2.14(3H,s,H-28),2.12(1H,m,H-9),1.99(1H,m,H-20),1.98(1H,m,H-8),1.95(1H,m,H-12a),1.85(2H,m,H-15a,16a),1.81(1H,m,H-11a),1.60(1H,m,H-16b),1.57(1H,m,H-11b),1.40(1H,m,H-14),1.37(3H,s,H-19),1.33(1H,m,H-15b),1.31(1H,m,H-12b),1.22(1H,m,H-17),1.05(3H,d,J=6.6 Hz,H-21),0.80(3H,s,H-18);13C-NMR(CD3OD,100 MHz)δ:211.6(C-1),168.6(C-26),160.3(C-24),145.2(C-5),130.2(C-4),128.7(C-6),126.2(C-3),123.7(C-25),104.0(C-1′),80.2(C-22),78.0(C-3′,5′),75.0(C-2′),71.6(C-4′),65.0(C-7),63.6(C-27),62.8(C-6′),54.0(C-10),53.2(C-17),50.6(C-14),43.8(C-13),40.6(C-12),40.5(C-2,20),38.4(C-8),35.0(C-9),30.8(C-23),28.2(C-16),25.0(C-15),23.3(C-11),20.8(C-28),20.0(C-19),13.8(C-21),12.2(C-18)。與文獻(xiàn)[6]報(bào)道一致,故鑒定為daturametelin I。

化合物11:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性。分子式C34H48O11;HR-ESI-MSm/z655.308 8 [M+Na]+。1H-NMR(CD3OD,400 MHz)δ:7.08(1H,dd,J=9.7,5.8 Hz,H-3),6.23(1H,d,J=5.8 Hz,H-4),5.97(1H,d,J=9.7 Hz,H-2),4.62(1H,d,J=11.2 Hz,H-27a),4.48(1H,m,H-22),4.46(1H,d,J=11.2 Hz,H-27b),4.32(1H,d,J=7.8 Hz,H-1′),4.22(1H,d,J=3.3 Hz,H-6),3.85(1H,dd,J=12.0,2.0 Hz,H-6′a),3.74(1H,t,J=2.8 Hz,H-7),3.67(1H,m,H-6′b),3.34(1H,overlap,H-5′),3.28(1H,m,H-4′),3.26(1H,m,H-3′),3.15(1H,m,H-2′),2.56(1H,dd,J=18.0,13.4 Hz,H-23a),2.18(1H,dd,J=18.0,3.2 Hz,H-23b),2.12(3H,s,H-28),2.10(1H,m,H-8),1.98(3H,m,H-11a,12a,20),1.80(2H,m,H-15a,16a),1.58(2H,m,H-9,11b),1.46(1H,m,H-16b),1.43(3H,s,H-19),1.42(1H,m,H-14),1.28(2H,m,H-15b,17),1.15(1H,m,H-12b),1.03(3H,d,J=6.6 Hz,H-21),0.84(3H,s,H-18);13C-NMR(CD3OD,100 MHz)δ:208.7(C-1),168.6(C-26),160.2(C-24),157.4(C-5),142.4(C-3),126.7(C-2),123.7(C-25),122.0(C-4),104.0(C-1′),80.1(C-22),79.2(C-6),78.0(C-3′,5′),75.0(C-2′),73.7(C-7),71.6(C-4′),63.6(C-27),62.8(C-6′),55.2(C-10),53.1(C-17),51.3(C-14),43.8(C-13),42.6(C-9),40.6(C-12),40.5(C-20),36.4(C-8),30.8(C-23),28.2(C-16),24.9(C-15),22.5(C-11),20.7(C-28),19.9(C-19),13.6(C-21),12.2(C-18)。與文獻(xiàn)[6]報(bào)道一致,故鑒定為daturametelin J。

化合物12:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C34H48O10;HR-ESI-MSm/z639.313 8 [M+Na]+。1H-NMR(CD3OD,400 MHz)δ:6.92(1H,ddd,J=10.0,4.9,2.4 Hz,H-3),5.85(1H,dd,J=10.0,2.4 Hz,H-2),5.79(1H,dd,J=5.9,1.7 Hz,H-6),4.63(1H,d,J=11.2 Hz,H-27a),4.50(1H,m,H-22),4.47(1H,d,J=11.2 Hz,H-27b),4.32(1H,d,J=7.8 Hz,H-1′),3.85(1H,dd,J=12.0,2.2 Hz,H-6′a),3.79(1H,t,J=4.2 Hz,H-7),3.67(1H,dd,J=12.0,5.2 Hz,H-6′b),3.41(1H,m,H-4a),3.34(1H,m,H-3′),3.28(2H,m,H-4′,5′),3.16(1H,t,J=8.1 Hz,H-2′),2.94(1H,dd,J=21.4,4.9 Hz,H-4b),2.58(1H,dd,J=17.9,13.5 Hz,H-23a),2.22(1H,m,23b),2.14(3H,s,H-28),1.99(4H,m,H-8,9,12a,20),1.82(3H,m,H-11,16a),1.60(1H,m,H-15a),1.44(1H,m,H-16b),1.40(1H,m,H-14),1.35(1H,m,H-15b),1.30(1H,m,H-12b),1.25(3H,s,H-19),1.20(1H,m,H-17),1.06(1H,d,J=6.6 Hz,H-21),0.79(3H,s,H-18);13CNMR(CD3OD,100 MHz)δ:205.6(C-1),168.6(C-26),160.3(C-24),147.6(C-3),141.6(C-5),128.4(C-6),127.5(C-2),123.6(C-25),104.0(C-1′),80.2(C-22),78.0(C-3′,5′),75.0(C-2′),71.6(C-4′),64.8(C-7),63.6(C-27),62.7(C-6′),53.2(C-14),52.2(C-17),51.0(C-10),43.5(C-13),40.8(C-12),40.5(C-9),39.5(C-20),36.4(C-8),34.4(C-4),30.8(C-23),28.2(C-16),25.0(C-15),24.6(C-11),20.7(C-28),18.7(C-19),13.7(C-21),12.1(C-18)。與文獻(xiàn)[8]報(bào)道一致,故鑒定為daturataturin A。

化合物13:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C34H46O9;HR-ESI-MSm/z621.303 3 [M+Na]+。1H-NMR(CD3OD,400 MHz)δ:7.11(1H,dd,J=10.0,6.2 Hz,H-3),6.20(1H,dd,J=10.0,2.6 Hz,H-6),6.03(1H,d,J=6.2 Hz,H-4),5.88(2H,d,J=10.0 Hz,H-2,7),4.62(1H,d,J=11.2 Hz,H-27a),4.48(1H,m,H-22),4.46(1H,overlap,H-27b),4.32(1H,d,J=7.8 Hz,H-1′),3.85(1H,dd,J=12.0,2.1 Hz,H-6′a),3.67(1H,m,H-6′b),3.33(1H,m,H-3′),3.26(2H,m,H-4′,5′),3.15(1H,t,J=8.4 Hz,H-2′),2.55(1H,dd,J=17.9,13.2 Hz,H-23a),2.37(1H,t,J=10.0 Hz,H-8),2.18(2H,m,H-15a,23b),2.12(3H,s,H-28),2.06(1H,m,H-12a),1.97(1H,m,H-20),1.83(2H,m,H-11a,16a),1.69(1H,m,H-15b),1.56(1H,m,H-9),1.45(1H,m,H-16b),1.35(1H,m,H-11b),1.28(2H,m,H-14,17),1.24(3H,s,H-19),1.19(1H,m,H-12b),1.03(3H,d,J=6.6 Hz,H-21),0.86(3H,s,H-18);13C-NMR(CD3OD,100 MHz)δ:207.2(C-1),168.6(C-26),160.3(C-24),157.5(C-5),143.2(C-3),136.2(C-7),128.5(C-6),125.8(C-2),123.6(C-25),118.4(C-4),104.0(C-1′),80.0(C-22),78.0(C-3′,5′),75.0(C-2′),71.5(C-4′),63.6(C-27),62.7(C-6′),55.1(C-14),53.0(C-17),52.3(C-10),48.8(C-9),45.0(C-13),41.0(C-12),40.4(C-20),39.3(C-8),30.7(C-23),28.1(C-16),25.0(C-11),23.7(C-15),20.8(C-28),20.5(C-19),13.6(C-21),12.2(C-18)。與文獻(xiàn)[8]報(bào)道一致,故鑒定為baimantuoluoside H。

化合物14:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C35H50O10;HR-ESI-MSm/z653.329 4 [M+Na]+。1H-NMR(CD3OD,400 MHz)δ:6.16(1H,dd,J=10.0,1.6 Hz,H-4),6.02(1H,d,J=5.2 Hz,H-6),5.84(1H,m,H-3),4.62(1H,d,J=11.2 Hz,H-27a),4.49(1H,m,H-22),4.46(1H,overlap,H-27b),4.32(1H,d,J=7.8 Hz,H-1′),3.85(1H,dd,J=12.0,2.0 Hz,H-6′a),3.67(1H,dd,J=12.0,5.2 Hz,H-6′b),3.48(1H,m,H-7),3.44(1H,m,H-2b),3.35(1H,m,H-3′),3.30(3H,overlap,7-OCH3),3.26(2H,m,H-4′,5′),3.16(1H,t,J=8.4 Hz,H-2′),2.72(1H,dd,J=20.3,5.0 Hz,H-2a),2.57(1H,m,H-23a),2.22(1H,dd,J=18.1,3.2 Hz,H-23b),2.13(3H,s,H-28),2.10(1H,m,H-9),1.97(2H,m,H-12a,20),1.81(2H,m,H-11a,16a),1.74(2H,m,H-11b,15a),1.61(2H,m,H-8,14),1.42(1H,m,H-16b),1.36(3H,s,H-19),1.28(3H,m,H-12b,15b,17),1.04(3H,d,J=6.6 Hz,H-21),0.78(3H,s,H-18);13C-NMR(CD3OD,100 MHz)δ:211.5(C-1),168.6(C-26),160.4(C-24),146.6(C-5),130.2(C-4),126.4(C-3),125.6(C-6),123.6(C-25),104.0(C-1′),80.1(C-22),78.0(C-3′,5′),75.0(C-2′),74.0(C-7),71.6(C-4′),63.6(C-27),62.7(C-6′),56.8(7-OCH3),54.1(C-10),53.2(C-17),50.4(C-14),43.8(C-13),40.5(C-2,20),40.4(C-12),38.0(C-8),35.7(C-9),30.7(C-23),28.2(C-16),25.1(C-15),23.4(C-11),20.7(C-28),20.1(C-19),13.7(C-21),11.9(C-18)。與文獻(xiàn)[4]報(bào)道一致,故鑒定為(22R)-27-hydroxy-7α-methoxy-1-oxowitha-3,5,24-trienolide。

化合物15:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C27H22O18;HR-ESI-MSm/z657.068 5 [M+Na]+。1H-NMR(CD3OD,600 MHz)δ:7.06(2H,s,H-23,27),6.69(1H,s,H-3),6.66(1H,s,H-12),6.37(1H,d,J=1.6 Hz,H-20),4.96(2H,m,H-16,18),4.52(1H,m,H-15a),4.47(1H,m,H-17),4.16(1H,dd,J=11.0,8.4 Hz,H-15b),3.99(1H,d,J=1.0 Hz,H-19);13C-NMR(CD3OD,150 MHz)δ:170.1(C-14),168.5(C-1),166.7(C-21),146.4(C-24,26),146.0(C-11),145.6(C-9),145.3(C-6),145.2(C-4),140.4(C-25),138.2(C-5),137.7(C-10),125.5(C-13),125.4(C-2),120.6(C-22),117.2(C-7),116.7(C-8),110.2(C-3),111.0(C-23,27),108.3(C-12),95.0(C-20),76.2(C-18),71.6(C-16),69.5(C-19),65.0(C-15),62.5(C-17)。與文獻(xiàn)[9]報(bào)道一致,故鑒定為柯里拉京。

化合物16:黃色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C23H26O10;HR-ESI-MSm/z485.123 5 [M+Na]+。1H-NMR(CD3OD,400 MHz)δ:7.04(2H,d,J=8.4 Hz,H-2′,6′),6.70(2H,d,J=8.4 Hz,H-3′,5′),6.52(1H,d,J=2.2 Hz,H-7),6.50(1H,br.s,H-5),4.98(1H,d,J=7.3 Hz,H-1?),4.50(1H,m,H-3),3.89(1H,dd,J=12.2,2.2 Hz,H-6?a),3.68(1H,dd,J=12.2,5.7 Hz,H-6?b),3.31~3.50(4H,m,H-2?,3?,4?,5?),2.95(1H,m,H-4a),2.89(1H,m,H-4b),2.78(1H,m,H-2″a),2.69(1H,m,H-2″b),2.07(1H,m,H-1″a),1.96(1H,m,H-1″b);13C-NMR(CD3OD,100 MHz)δ:171.4(C-1),165.1(C-6,8),156.7(C-4′),143.4(C-10),133.1(C-1′),130.4(C-2′,6′),116.3(C-3′,5′),108.2(C-5),104.0(C-9),103.5(C-7),101.3(C-1?),80.1(C-3),78.3(C-5?),77.8(C-3?),74.7(C-2?),71.2(C-4?),62.4(C-6?),37.9(C-1″),33.9(C-4),31.1(C-2″)。與文 獻(xiàn) [10 ]報(bào)道一致,故鑒定為desmethylagrimonolide 6-O-β-D-glucopyranoside。

化合物17:黃色無定形粉末(甲醇),Molish反應(yīng)呈陽性。分子式C24H28O10;HR-ESI-MSm/z499.157 0 [M+Na]+。1H-NMR(CD3OD,600 MHz)δ:7.14(2H,d,J=8.6 Hz,H-2′,6′),6.83(2H,d,J=8.6 Hz,H-3′,5′),6.52(1H,d,J=2.1 Hz,H-7),6.50(1H,br.s,H-5),4.97(1H,d,J=7.3 Hz,H-1?),4.50(1H,m,H-3),3.89(1H,dd,J=12.1,2.0 Hz,H-6?a),3.74(3H,s,4′-OCH3),3.68(1H,dd,J=12.1,5.8 Hz,H-6?b),3.34~3.49(4H,m,H-2?,3?,4?,5?),2.96(1H,m,H-4a),2.92(1H,m,H-4b),2.82(1H,m,H-2″a),2.72(1H,m,H-2″b),2.09(1H,m,H-1″a),1.98(1H,m,H-1″b);13C-NMR(CD3OD,150 MHz)δ:171.3(C-1),165.2(C-6),165.1(C-8),159.6(C-4′),143.4(C-10),134.3(C-1′),130.4(C-2′,6′),115.0(C-3′,5′),108.3(C-5),104.0(C-9),103.5(C-7),101.4(C-1?),80.1(C-3),78.4(C-5?),77.9(C-3?),74.7(C-2?),71.2(C-4?),62.4(C-6?),55.7(4′-OCH3),37.8(C-1″),33.9(C-4),31.1(C-2″)。與文獻(xiàn)[11]報(bào)道一致,故鑒定為仙鶴草內(nèi)酯-6-O-β-D-葡萄吡喃糖苷。

化合物18:無色方晶(甲醇),分子式為C22H26O8;HR-ESI-MSm/z441.151 7 [M+Na]+。1HNMR(CD3OD,400 MHz)δ:6.65(4H,s,H-2,2′,6,6′),4.71(2H,d,J=4.3 Hz,H-7,7′),4.26(2H,dd,J=9.0,6.9 Hz,H-9a,9′a),3.88(2H,dd,J=9.0,3.6 Hz,H-9b,9′b),3.84(12H,s,3,3′,5,5′-OCH3),3.13(2H,m,H-8,8′);13C-NMR(CD3OD,100 MHz)δ:149.4(C-3,3′,5,5′),136.2(C-4,4′),133.2(C-1,1′),104.6(C-2,2′,6,6′),87.6(C-7,7′),72.8(C-9,9′),56.8(3,3′,5,5′-OCH3),55.5(C-8,8′)。與文獻(xiàn)[12]報(bào)道一致,故鑒定為丁香脂素。

化合物19:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C28H36O13;HR-ESI-MSm/z603.204 7 [M+Na]+。1H-NMR(CD3OD,400 MHz)δ:6.71(2H,s,H-2,6),6.65(2H,s,H-2′,6′),4.86(1H,d,J=7.5 Hz,H-1″),4.76(1H,d,J=4.0 Hz,H-7),4.71(1H,d,J=4.3 Hz,H-7′),4.28(2H,m,H-9a,9′a),3.91(2H,dd,J=9.2,3.0 Hz,H-9b,9′b),3.85(6H,s,3,5-OCH3),3.84(6H,s,3′,5′-OCH3),3.77(1H,dd,J=12.0,2.3 Hz,H-6″a),3.65(1H,dd,J=12.0,5.1 Hz,H-6″b),3.47(1H,m,H-2″),3.41(2H,m,H-3″,4″),3.18(1H,m,H-5″),3.13(2H,m,H-8,8′);13C-NMR(CD3OD,100 MHz)δ:154.4(C-3,5),149.4(C-3′,5′),139.6(C-1),136.2(C-4′),135.6(C-4),133.1(C-1′),105.3(C-1″),104.8(C-2,6),104.5(C-2′,6′),87.6(C-7′),87.2(C-7),78.4(C-5″),77.8(C-3″),75.7(C-2″),72.9(C-9,9′),71.3(C-4″),62.6(C-6″),57.1(3′,5′-OCH3),56.8(3,5-OCH3),55.7(C-8′),55.5(C-8)。與文獻(xiàn)[12]報(bào)道一致,故鑒定為丁香脂素-4-O-β-D-吡喃葡萄糖苷。

化合物20:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C24H24O10;HR-ESI-MSm/z471.128 6 [M-H]-。1H-NMR(CD3OD,400 MHz)δ:7.71(1H,d,J=15.9 Hz,H-7′),7.61(1H,d,J=15.9 Hz,H-7″),7.44(4H,J=8.6,4.4 Hz,H-2′,2″,6′,6″),6.79(4H,dd,J=8.7,2.2 Hz,H-3′,3″,5′,5″),6.37(1H,d,J=15.9 Hz,H-8′),6.33(1H,d,J=15.9 Hz,H-8″),5.60(1H,d,J=7.6 Hz,H-1),4.50(1H,dd,J=12.1,2.0 Hz,H-6a),4.32(1H,dd,J=12.1,5.6 Hz,H-6b),3.42~3.70(4H,m,H-2,3,4,5);13C-NMR(CD3OD,100 MHz)δ:169.2(C-9″),167.6(C-9′),161.6(C-4′),161.3(C-4″),148.1(C-7′),146.9(C-7″),131.4(C-2′,6′),131.3(C-2″,6″),127.2(C-1′),127.1(C-1″),116.9(C-3′,5′),116.8(C-3″,5″),114.9(C-8″),114.4(C-8′),95.8(C-1),77.9(C-3),76.3(C-5),74.0(C-2),71.4(C-4),64.4(C-6)。與文獻(xiàn)[13]報(bào)道一致,故鑒定為 1,6-di-O-coumaroyl glucopyranoside。

化合物21:白色無定形粉末(甲醇),分子式C11H10O4;HR-ESI-MSm/z229.047 1 [M +Na]+。1H-NMR(CD3OD,600 MHz)δ:7.88(1H,d,J=9.5 Hz,H-4),7.13(1H,s,H-5),6.97(1H,s,H-8),6.26(1H,d,J=9.4 Hz,H-3),3.92(3H,s,6-OCH3),3.88(3H,s,7-OCH3);13C-NMR(CD3OD,150 MHz)δ:163.8(C-2),154.8(C-7),151.3(C-9),148.1(C-6),145.9(C-4),113.5(C-3),113.0(C-10),110.0(C-5),101.0(C-8),56.8(6,7-OCH3)。與文獻(xiàn)[14]報(bào)道一致,故鑒定為濱蒿內(nèi)酯。

化合物22:白色無定形粉末(甲醇),分子式C10H8O4;HR-ESI-MSm/z215.031 1 [M+Na]+。1HNMR(CD3OD,600 MHz)δ:7.87(1H,d,J=9.4 Hz,H-4),7.12(1H,s,H-5),6.78(1H,s,H-8),6.21(1H,d,J=9.4 Hz,H-3),3.92(3H,s,6-OCH3);13C-NMR(CD3OD,150 MHz)δ:164.1(C-2),153.0(C-7),151.5(C-9),147.1(C-4),146.2(C-6),112.7(C-5,10),110.0(C-3),104.0(C-8),56.9(6-OCH3)。與文獻(xiàn)[15]報(bào)道一致,故鑒定為東莨菪內(nèi)酯。

化合物23:白色無定形粉末(甲醇),Molish反應(yīng)呈陽性,分子式C36H58O10;HR-ESI-MSm/z673.392 0 [M+Na]+。1H-NMR(CD3OD,600 MHz)δ:5.32(1H,d,J=8.1 Hz,H-1′),5.31(1H,t,J=2.5 Hz,H-12),3.80(1H,dd,J=12.0,2.0 Hz,H-6′a)3.69(1H,dd,J=12.0,4.7 Hz,H-6′b),3.63(1H,m,H-2),3.39(1H,d,J=8.8 Hz,H-3),1.33(3H,s,H-27),1.20(3H,s,H-29),1.01(6H,s,H-23,26),0.94(3H,d,J=6.7 Hz,H-30),0.80(3H,s,H-24),0.78(3H,s,H-25);13C-NMR(CD3OD,150 MHz)δ:178.5(C-28),139.7(C-13),129.5(C-12),95.8(C-1′),84.5(C-3),78.6(C-5′),78.3(C-3′),73.9(C-2′),73.6(C-19),71.1(C-4′),69.5(C-2),62.4(C-6′),56.7(C-5),55.0(C-18),48.7(C-17),48.5(C-9),48.2(C-1),42.9(C-14),42.7(C-20),41.3(C-8),40.5(C-10),39.2(C-4),38.3(C-22),34.1(C-7),29.6(C-15),29.3(C-23),27.2(C-21),27.0(C-29),26.5(C-16),24.8(C-11),24.6(C-27),19.7(C-6),17.6(C-26),17.4(C-24),17.1(C-30),16.6(C-25)。與文獻(xiàn)[16]報(bào)道一致,故鑒定為野薔薇亭。

化合物24:白色無定形粉末(甲醇),分子式C11H16O3;HR-ESI-MSm/z219.099 7 [M +Na]+。1H-NMR(CD3OD,600 MHz)δ:5.75(1H,s,H-7),4.22(1H,m,H-3),2.42(1H,dt,J=13.9,2.8 Hz,H-4b),1.99(1H,dt,J=14.4,2.8 Hz,H-2b),1.76(3H,s,H-11),1.74(1H,d,J=4.0 Hz,H-4a),1.53(1H,dd,J=14.4,3.7 Hz,H-2a),1.47(3H,s,H-9),1.28(3H,s,H-10);13C-NMR(CD3OD,150 MHz)δ:185.7(C-6),174.4(C-8),113.3(C-7),88.9(C-5),67.2(C-3),48.0(C-2),46.4(C-4),37.2(C-1),31.0(C-10),27.4(C-11),27.0(C-9)。與文獻(xiàn)[17]報(bào)道一致,故鑒定為(-)-loliolide。

化合物25:白色無定形粉末(甲醇),分子式C11H16O3;HR-ESI-MSm/z219.099 7 [M+Na]+。1HNMR(CD3OD,600 MHz)δ:5.78(1H,s,H-7),4.10(1H,m,H-3),2.47(1H,ddd,J=11.7,4.0,2.2 Hz,H-4b),2.00(1H,ddd,J=12.7,4.0,2.2 Hz,H-2b),1.59(3H,s,H-11),1.42(1H,m,H-4a),1.32(3H,s,H-10),1.29(3H,s,H-9),1.29(1H,overlap,H-2a);13C-NMR(CD3OD,150 MHz)δ:183.9(C-6),174.0(C-8),113.7(C-7),88.5(C-5),65.2(C-3),50.7(C-2),48.6(C-4),36.1(C-1),30.3(C-10),25.8(C-11),25.3(C-9)。與文獻(xiàn)[17]報(bào)道一致,故鑒定為(+)-isololiolide。

化合物26:黃色油狀物(甲醇),分子式C16H22O4;HR-ESI-MSm/z301.140 7 [M+Na]+。1HNMR(CD3OD,600 MHz)7.72δ:(2H,dd,J=5.7,3.3 Hz,H-2,5),7.62(2H,dd,J=5.7,3.3 Hz,H-3,4),4.30(4H,t,J=6.6 Hz,H-1′,1″),1.73(4H,m,H-2′,2″),1.47(4H,m,H-3′,3″),1.00(6H,t,J=7.4 Hz,H-4′,4″);13C-NMR(CD3OD,150 MHz)δ:169.3(C-7,7′),133.6(C-1,6),132.3(C-3,4),129.9(C-2,5),66.6(C-1′,1″),31.7(C-2′,2″),20.2(C-3′,3″),14.0(C-4′,4″)。與文獻(xiàn)[18]報(bào)道一致,故鑒定為鄰苯二甲酸二丁酯。

化合物27:白色無定形粉末(甲醇),分子式C7H6O3;HR-ESI-MSm/z145.026 1 [M+Na]+。1HNMR(CD3OD,400 MHz)δ:9.75(1H,s,-CHO),7.76(2H,d,J=8.6 Hz,H-2,6),6.90(2H,d,J=8.6 Hz,H-3,5);13C-NMR(CD3OD,100 MHz)δ:192.8(-CHO),165.4(C-4),133.4(C-2,6),130.2(C-1),116.9(C-3,5)。與文獻(xiàn)[17]報(bào)道一致,故鑒定為對羥基苯甲醛。

化合物28:白色無定形粉末(甲醇),分子式C9H10O5;HR-ESI-MSm/z221.041 8 [M+Na]+。1HNMR(CD3OD,600 MHz)δ:7.05(2H,s,H-2,6),4.27(2H,q,J=7.1 Hz,H-8),1.35(3H,t,J=7.1 Hz,H-9);13C-NMR(CD3OD,150 MHz)δ:168.6(C-7),146.5(C-3,5),139.7(C-4),121.8(C-1),110.0(C-2,6),61.6(C-8),14.6(C-9)。與文獻(xiàn)[19]報(bào)道一致,故鑒定為沒食子酸乙酯。

4 抗炎活性篩選

參照文獻(xiàn) [2],利用脂多糖(LPS)刺激RAW264.7 巨噬細(xì)胞炎癥模型,對各化合物抑制NO 生成作用進(jìn)行測定,結(jié)果見表1。各化合物均能對NO 釋放呈現(xiàn)不同程度的抑制作用,其中化合物9、20 作用較強(qiáng)。

表1 各化合物對LPS 刺激RAW264.7 細(xì)胞中NO 生成的影響(μmol/L,, n=3)Tab.1 Effects of various compounds on NO production in LPS-stimulated RAW264.7 cells(μmol/L,, n=3)

表1 各化合物對LPS 刺激RAW264.7 細(xì)胞中NO 生成的影響(μmol/L,, n=3)Tab.1 Effects of various compounds on NO production in LPS-stimulated RAW264.7 cells(μmol/L,, n=3)

5 討論

本研究采用各種分離鑒定手段,最終從洋金花葉70%乙醇提取物中分離出28 個(gè)化合物,包括14個(gè)醉茄內(nèi)酯類、1 個(gè)糖苷類、7 個(gè)苯丙素類、6 個(gè)其他類,并且各化合物均能不同程度地抑制NO 的釋放,其中化合物9、20 作用更明顯,3、13、14被發(fā)現(xiàn)有潛在的抗增殖、抗免疫作用[4],可為該藥材開發(fā)利用、化學(xué)成分研究及生物活性篩選提供理論依據(jù)和實(shí)驗(yàn)基礎(chǔ)。

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