王建雄,肖小武,趙敏敏,陳麗楠,陳丹丹,王 棟,付輝政*
(1.江西中醫(yī)藥大學(xué),江西 南昌 330004;2.江西省藥品檢驗(yàn)檢測研究院,國家藥品監(jiān)督管理局中成藥質(zhì)量評價重點(diǎn)實(shí)驗(yàn)室,江西省藥品與醫(yī)療器械質(zhì)量工程技術(shù)研究中心,江西 南昌 330029;3.江西省檢驗(yàn)檢測認(rèn)證總院,江西 南昌 330052)
覆盆子又名掌葉覆盆子,主產(chǎn)于江西、浙江、湖北、湖南等地[1],在2020 年版《中國藥典》 中收載用藥部位為果實(shí),但覆盆子葉的主要為民間記載用藥,具有清熱解毒的功效,主要用作營養(yǎng)保?。?]。目前藥理作用研究表明,覆盆子葉具有抗腫瘤、降低血糖血脂、抗氧化等作用[3-4],其化學(xué)成分有二萜類、酚酸類、木脂素、黃酮類等[5-6]。課題組在覆盆子植物的研究基礎(chǔ)之上,從覆盆子葉的醋酸乙酯部位、二氯甲烷部位中分離得到22 個單體化合物,其中化合物4、7、10、17~18、20~22 為首次從覆盆子中分離得到,化合物1~3、5~6、8~9、11~14 為首次從覆盆子葉中分離得到。
Varian UNITY INOVA 600 超導(dǎo)核磁共振儀(美國Varian 公司);LC-20AR 型半制備HPLC 儀(日本島津公司);C18反相填料 (日本YMC 公司);氘代試劑DMSO-d6、C5D5N、CD3OD (美國劍橋公司);FreeZoneR 冷凍干燥機(jī) (美國LABCONCO 公司);Waters Xevo 質(zhì)譜儀 (美國Waters 公司)。乙腈、甲醇為色譜純(美國Sigma公司);甲醇、二氯甲烷、石油醚、乙酸乙酯為分析純(國藥集團(tuán)化學(xué)試劑有限公司);水為超純水。
覆盆子葉采自江西省撫州市崇仁縣,經(jīng)江西省藥品檢驗(yàn)檢測研究院付輝政研究員鑒定為薔薇科懸鉤子植物掌葉覆盆子RubuschingiiHu 的葉。標(biāo)本保留于江西省藥品檢驗(yàn)檢測研究院科研室。
取覆盆子葉4.7 kg 粉碎,用10 倍量水煎煮提取2~3 次,每次2 h,濃縮提取液,依次用二氯甲烷、醋酸乙酯進(jìn)行萃取,減壓濃縮,得到二氯甲烷部位(15 g)、醋酸乙酯部位(60 g)。
醋酸乙酯部位用100 mL 甲醇溶解,經(jīng)硅膠柱分離,以二氯甲烷-甲醇(6 ∶1~3 ∶1) 梯度洗脫,經(jīng)TLC 檢識,得Fr.1~Fr.9。Fr.4 (15.57 g) 經(jīng)C18柱分離,以甲醇-水(5 ∶95~100 ∶0) 梯度洗脫,經(jīng)HPLC 檢識,得Fr.4-1~Fr.4-40,F(xiàn)r.4-19(900 mg) 經(jīng)半制備HPLC 分離,以18% 乙腈洗脫,得化合物1 (12 mg,tR=20.2 min,檢測波長254 nm)、2 (37 mg,tR=40.5 min,檢測波長254 nm),F(xiàn)r.4-21 (300 mg) 經(jīng)半制備HPLC 分離,以18% 乙腈洗脫,得化合物3 (2.5 mg,tR=25.7 min,檢測波長254 nm)、4 (11 mg,tR=92.0 min,檢測波長254 nm),F(xiàn)r.4-23 (200 mg)經(jīng)半制備HPLC 分離,以18%乙腈洗脫,得化合物5 (100 mg,tR=82.2 min,檢測波長254 nm),F(xiàn)r.4-25 (500 mg) 經(jīng)半制備HPLC 分離,以30%甲醇洗脫,得化合物6 (70 mg,tR=83.5 min,檢測波長254 nm)。Fr.3 (4.88 g) 經(jīng)C18中壓反向柱分離,以甲醇-水(5 ∶95~100 ∶0) 梯度洗脫,再經(jīng)HPLC 檢識合并,得Fr.3-1~Fr.3-6,F(xiàn)r.3-4(700 mg) 經(jīng)半制備HPLC 分離,以18% 乙腈洗脫,得化合物7 (6 mg,tR=120.0 min,檢測波長254 nm)、11 (50 mg,tR=22.8 min,檢測波長254 nm)。Fr.2 (5.76 g) 經(jīng)C18柱分離,以甲醇-水(5 ∶95~100 ∶0) 梯度洗脫,再經(jīng)HPLC 檢識合并,得Fr.2-1~Fr.2-5,F(xiàn)r.2-4 (900 mg) 經(jīng)半制備HPLC 分離,以10% 甲醇洗脫,得化合物8(60 mg,tR=20.7 min,檢測波長254 nm)、9 (11 mg,tR=60.1 min,檢測波長254 nm)。Fr.9(4.56 g) 經(jīng)C18柱分離,以甲醇-水 (5 ∶ 95~100 ∶0) 梯度洗脫,再經(jīng)HPLC 檢識合并,得Fr.9-1~Fr.9-5,F(xiàn)r.9-4 經(jīng)半制備HPLC 分離,以40%甲醇洗脫,得化合物10 (50 mg,tR=37.5 min,檢測波長254 nm)。Fr.7 (3.49 g) 經(jīng)C18柱分離,以甲醇-水(5 ∶95~100 ∶0) 梯度洗脫,再經(jīng)HPLC 檢識合并,得Fr.7-1~Fr.7-3,F(xiàn)r.7-3 經(jīng)半制備HPLC 分離,以23% 乙腈洗脫,得化合物12 (70 mg,tR=23.5 min,檢測波長210 nm)、13(40 mg,tR=72.8 min,檢測波長210 nm)、14(100 mg,tR=10.4 min,檢測波長210 nm)、15(20 mg,tR=170.6 min,檢測波長210 nm)。
二氯甲烷部位經(jīng)C18柱分離,得Fr.A~Fr.E。Fr.A 經(jīng)半制備HPLC 分離,以18%乙腈洗脫,得化合物16 (15 mg,tR=190.8 min,檢測波長210 nm)、17 (10 mg,tR=195.3 min,檢測波長210 nm)、18 (20 mg,tR=120.6 min,檢測波長210 nm)、19 (30 mg,tR=150.8 min,檢測波長210 nm)。Fr.C 經(jīng)半制備HPLC 分離,以25% 乙腈洗脫,得化合物20 (60 mg,tR=72.4 min,檢測波長254 nm)、21 (34 mg,tR=177.5 min,檢測波長254 nm)、22 (15 mg,tR=120.2 min,檢測波長254 nm)。
化合物1:淺黃色無定形粉末,ESI-MSm/z:447.2 [M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:8.67 (2H,d,J=12.0 Hz,H-2',6');13C-NMR(150 MHz,DMSO-d6)δ:156.9 (C-2),133.2(C-3),177.4 (C-4),161.6 (C-5),98.7 (C-6),164.3 (C-7),93.4 (C-8),156.5 (C-9),104.8 (C-10),121.5 (C-1'),115.4 (C-2'),144.9 (C-3'),148.4 (C-4'),116.3 (C-5'),121.3 (C-6'),100.6 (C-1″),74.6 (C-2″),77.9 (C-3″),69.1 (C-4″),76.9 (C-5″),61.4(C-6″)。以上數(shù)據(jù)與文獻(xiàn)[7] 報道基本一致,故鑒定為異槲皮苷。
化合物2:黃色無定形粉末,ESI-MSm/z:463.6 [M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:7.56 (1H,dd,J=12.0,2.4 Hz,H-6'),3.57(1H,dd,J=12.0,3.0 Hz,H-6a″),3.55 (1H,dd,J=12.0,6.0 Hz,H-6b″),3.36 (1H,dd,J=9.0,7.8 Hz,H-2″),3.33 (1H,t,J=9.6 Hz,H-3″),3.20 (1H,t,J=9.6 Hz,H-4″),3.08 (1H,ddd,J=12.0,6.0,2.4 Hz,H-5″);13C-NMR (150 MHz,DMSO-d6)δ:156.5 (C-2),133.7 (C-3),177.8 (C-4),161.6 (C-5),99.0(C-6),164.5 (C-7),93.9 (C-8),156.7 (C-9),104.4 (C-10),122.0 (C-1'),115.6 (C-2'),148.8 (C-3'),145.2 (C-4'),116.6 (C-5'),121.5 (C-6'),101.2 (C-1″),74.5 (C-2″),78.0 (C-3″),70.3 (C-4″),76.9 (C-5″),61.3 (C-6″)。以上數(shù)據(jù)與文獻(xiàn)[8] 報道基本一致,故鑒定為槲皮素-3-O-β-D-吡喃葡萄糖苷。
化合物3:黃色無定形粉末,ESI-MSm/z:463.6 [M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:7.67 (1H,dd,J=9.6,2.4 Hz,H-6'),3.11~3.66 (6H,m,H-1″);13C-NMR (150 MHz,DMSO-d6)δ:156.7 (C-2),133.5 (C-3),177.9(C-4),162.9 (C-5),99.6 (C-6),164.8 (C-7),93.9 (C-8),156.7 (C-9),104.3 (C-10),122.4 (C-1'),115.6 (C-2'),145.3 (C-3'),148.9 (C-4'),116.3 (C-5'),121.5 (C-6'),102.2 (C-1″),71.6 (C-2″),73.6 (C-3″),68.3(C-4″),76.3 (C-5″),60.5 (C-6″)。以上數(shù)據(jù)與文獻(xiàn)[9] 報道基本一致,故鑒定為金絲桃苷。
化合物4:無定形粉末,ESI-MSm/z:359.3[M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:6.63(1H,dd,J=12.0,2.4 Hz,H-6'),3.74 (1H,m,H-7'),3.56 (1H,m,H-9a'),3.43 (2H,m,H-9),3.15 (1H,m,H-9b'),2.50 (1H,m,H-8),1.82 (1H,m,H-8');13C-NMR (150 MHz,DMSO-d6)δ:127.3 (C-1),111.1 (C-2),145.6 (C-3),143.5 (C-4),116.1 (C-5),132.3 (C-6),32.3 (C-7),37.9 (C-8),63.8(C-9),136.9 (C-1'),111.6 (C-2'),147.1 (C-3'),144.4 (C-4'),115.1 (C-5'),121.3 (C-6'),47.7 (C-7'),45.5 (C-8'),59.6 (C-9'),55.5 (3'-OCH3),55.3 (3-OCH3)。以上數(shù)據(jù)與文獻(xiàn)[10] 報道基本一致,故鑒定為(+)-異落葉松樹脂醇。
化合物5:黃色粉末,ESI-MSm/z:447.3[M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:4.28(1H,t,J=6.2 Hz,7-OH),3.08~3.58 (6H,m,H-2″~6″);13C-NMR (DMSO-d6,150 MHz)δ:156.7 (C-2),133.1 (C-3),177.4 (C-4),161.2 (C-5),98.7 (C-6),164.1 (C-7),93.6(C-8),156.2 (C-9),104.0 (C-10),120.9 (C-1'),130.9 (C-2',6'),115.1 (C-3',5'),159.9 (C-4'),100.8 (C-1″),74.2 (C-2″),76.4 (C-3″),69.9 (C-4″),77.5 (C-5″),60.8(C-6″)。以上數(shù)據(jù)與文獻(xiàn) [11] 報道基本一致,故鑒定為山柰酚-3-O-β-D-吡喃葡萄糖苷。
化合物6:黃色粉末,ESI-MSm/z:447.3[M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:4.47(1H,t,J=6.4 Hz,7-OH),3.24~3.65 (6H,m,H-2″~6″);13C-NMR (150 MHz,DMSO-d6)δ:156.6 (C-2),133.7 (C-3),177.4 (C-4),161.3 (C-5),98.7 (C-6),164.1 (C-7),93.6(C-8),156.3 (C-9),103.6 (C-10),120.8 (C-1'),131.3 (C-2',6'),115.6 (C-3',5'),159.9 (C-4'),101.6 (C-1″),71.2 (C-2″),73.1 (C-3″),67.8 (C-4″),75.7 (C-5″),60.2(C-6″)。以上數(shù)據(jù)與文獻(xiàn) [11] 報道基本一致,故鑒定為山柰酚-3-O-β-D-吡喃半乳糖苷。
化合物7:無定形粉末,ESI-MSm/z:301.7[M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:6.82(1H,dd,J=12.1,2.4 Hz,H-6'),3.96 (1H,dd,J=12.1,9.2 Hz,H-3a),3.56 (1H,t,J=7.9 Hz,H-γ),2.61 (1H,t,J=9.5 Hz,H-α),1.80 (1H,m,H-β);13C-NMR (150 MHz,DMSO-d6)δ:89.6 (C-2),53.1 (C-3),72.8 (C-3a),129.6 (C-4a),118.2 (C-4),137.4 (C-5),114.6 (C-6),145.3 (C-7),147.9 (C-7a),33.0 (C-α),35.5 (Cβ),62.3 (C-γ),134.7 (C-1'),110.8 (C-2'),149.5 (C-3'),147.5 (C-4'),116.7(C-5'),119.8 (C-6'),56.8 (C-OCH3),56.8 (C-OCH3),105.7 (C-1″),75.0 (C-2″),77.0 (C-3″),71.3 (C-4″),67.5 (C-5″)。以上數(shù)據(jù)與文獻(xiàn)[12] 報道基本一致,故鑒定為2,3-dihydro-7-methoxy-2-(4'-hydroxy-3'-methoxyphenyl)-3a-O-β-D-xylopyranosyloxymethyl-5-benzofuranpropanol。
化合物8:無定形粉末,ESI-MSm/z:301.6[M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:10.78 (4H,s,3,3',4,4'-OH);13C-NMR(150 MHz,DMSO-d6)δ:107.8 (C-1,1'),139.6 (C-2,2'),136.7 (C-3,3'),146.9 (C-4,4'),110.3 (C-5,5'),112.2 (C-6,6'),159.1 (C-7,7')。以上數(shù)據(jù)與文獻(xiàn)[13] 報道基本一致,故鑒定為為鞣花酸。
化合物9:黃色粉末,ESI-MSm/z:448.9[M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:7.95(2H,d,J=7.6 Hz,H-2',6),6.82 (2H,d,J=7.6 Hz,H-3',5'),6.41 (1H,d,J=3.2Hz,H-8),6.26 (1H,d,J=3.2 Hz,H-6),5.37(1H,d,J=7.6 Hz,H-6);13C-NMR (150 MHz,DMSO-d6)δ:156.1 (C-2),133.4 (C-3),177.5(C-4),103.8 (C-10),122.0 (C-1'),131.3(C-2',6'),115.2 (C-3',5'),161.2 (C-4'),101.8 (C-1),71.2 (C-2″),73.1 (C-3″),67.9(C-4″),75.8 (C-5″),60.1 (C-6″)。以上數(shù)據(jù)與文獻(xiàn)[14] 報道基本一致,故鑒定為山柰酚-3-Oβ-D-半乳糖苷。
化合物10:黃色針狀結(jié)晶,ESI-MSm/z:417.3 [M-H]-。1H-NMR (600 MHz,CD3OD)δ:4.30 (1H,dd,J=7.2,8.4 Hz,H-2″),4.21(1H,dd,J=14.9,3.7 Hz,H-5a″),4.05 (1H,dd,J=8.4,2.4 Hz,H-3″),3.83 (1H,dd,J=14.9,4.6 Hz,H-5b″),3.72 (1H,m,H-4″);13C-NMR (150 MHz,CD3OD)δ:135.6 (C-3),179.6 (C-4),163.0 (C-5),100.0 (C-6),166.1 (C-7),94.9 (C-8),159.0 (C-2,9),158.5 (C-2,9),104.7 (C-10),122.5 (C-1'),161.7 (C-4'),116.3 (C-3',5'),132.3 (C-2',6'),103.4 (C-1″),74.1 (C-2″),72.8 (C-3″),69.1 (C-4″),67.0 (C-5″)。以上數(shù)據(jù)與文獻(xiàn)[15] 報道基本一致,故鑒定為山柰酚-3-O-α-D-阿拉伯糖苷。
化合物11:白色無定形粉末,ESI-MSm/z:155.2 [M-H]-。1H-NMR (600 MHz,CD3OD)δ:7.06 (2H,s,H-2,6);13C-NMR (150 MHz,CD3OD)δ:122.4 (C-1),110.6 (C-2,6),146.7 (C-3,5),139.8 (C-4),170.9 (C-7)。以上數(shù)據(jù)與文獻(xiàn)[16] 報道基本一致,故鑒定為沒食子酸。
化合物12:白色無定形粉末,ESI-MSm/z:645.3 [M-H]-。1H-NMR (600 MHz,C5D5N)δ:5.64 (1H,t,J=6.6 Hz,H-14),4.74 (1H,dd,J=12.0,6.6 Hz,H-15b),4.61 (1H,dd,J=12.0,6.6 Hz,H-15a),3.36 (1H,m,H-18a);13C-NMR (150 MHz,C5D5N)δ:37.7 (C-1),28.0 (C-2),72.9 (C-3),43.7 (C-4),42.9 (C-5),24.4 (C-6),123.2 (C-7),135.4(C-8),54.8 (C-9),37.1 (C-10),26.4 (C-11),43.1 (C-12),140.8 (C-13),122.0 (C-14),66.6 (C-15),17.2 (C-16),22.8 (C-17),75.2 (C-18),13.0 (C-19),14.9 (C-20),106.1 (C-1'),75.4 (C-2'),79.0 (C-3'),72.2(C-4'),79.1 (C-5'),63.3 (C-6'),104.4 (C-1″),75.8 (C-2″),79.1 (C-3″),72.7 (C-4″),79.2 (C-5″),63.6 (C-6″)。以上數(shù)據(jù)與文獻(xiàn)[17] 報道基本一致,故鑒定為15,18-二-O-β-D-吡喃葡萄糖-13 (E)-對映-勞丹烷-7 (8),13(14)-二烯-3β,15,18-三醇。
化合物13:白色無定形粉末,ESI-MSm/z:645.3 [M-H]-。1H-NMR (600 MHz,C5D5N)δ:5.60 (1H,t,J=6.6 Hz,H-14),4.72 (1H,dd,J=11.4,6.6 Hz,H-15a),4.60 (1H,dd,J=11.4,6.6 Hz,H-15b);13C-NMR (150 MHz,C5D5N)δ:35.8 (C-1),28.6 (C-2),72.4 (C-3),43.7 (C-4),44.4 (C-5),19.5 (C-6),34.1 (C-7),127.0 (C-8),140.2 (C-9),39.6(C-10),27.6 (C-11),40.8 (C-12),141.0 (C-13),121.4 (C-14),66.5 (C-15),17.1 (C-16),20.0 (C-17),75.1 (C-18),13.7 (C-19),21.2 (C-20),106.2 (C-1'),75.5 (C-2'),79.0(C-3'),72.2 (C-4'),79.2 (C-5'),63.3 (C-6'),104.3 (C-1″),75.7 (C-2″),79.2 (C-3″),72.4 (C-4″),79.2 (C-5″),63.5 (C-6″).以上數(shù)據(jù)與文獻(xiàn)[17] 報道基本一致,故鑒定為15,18-二-O-β-D-吡喃葡萄糖苷-13 (E)-對映-勞丹烷-8 (9),13 (14)-二烯-3β,15,18-三醇。
化合物14:白色無定形粉末,ESI-MSm/z:645.3 [M-H]-。1H-NMR (600 MHz,C5D5N)δ:5.64 (1H,dd,J=6.8 Hz,H-14),4.71 (1H,dd,J=6.6,12.2 Hz,H-15a);13C-NMR (150 MHz,C5D5N)δ:38.7 (C-1),28.1 (C-2),72.5 (C-3),43.8 (C-4),48.3 (C-5),21.3(C-6),45.1 (C-7),73.7 (C-8),62.3 (C-9),39.7 (C-10),25.0 (C-11),44.2 (C-12),142.0 (C-13),121.1 (C-14),66.8 (C-15),17.6 (C-16),25.3 (C-17),75.2 (C-18),13.5(C-19),17.0 (C-20),106.3 (C-1'),79.0 (C-2'),79.1 (C-3'),75.7 (C-4'),72.2 (C-5'),63.4 (C-6'),104.5 (C-1″),79.1 (C-2″),79.2(C-3″),75.8 (C-4″),72.6 (C-5″),62.3 (C-6″)。以上數(shù)據(jù)與文獻(xiàn)[18] 報道基本一致,故鑒定為覆盆子苷A。
化合物15:白色無定形粉末,ESI-MSm/z:319.7 [M-H]-。1H-NMR (600 MHz,C5D5N)δ:5.61 (1H,t,J=6.6 Hz,H-14);13C-NMR (150 MHz,C5D5N)δ:38.8 (C-1),28.7 (C-2),72.3 (C-3),44.1 (C-4),47.5 (C-5),25.0(C-6),37.8 (C-7),149.5 (C-8),57.0 (C-9),40.2 (C-10),23.0 (C-11),39.4 (C-12),141.3 (C-13),121.7 (C-14),66.6 (C-15),17.3 (C-16),107.2 (C-17),75.1 (C-18),13.6 (C-19),15.9 (C-20),104.2 (C-1'),75.8 (C-2'),79.2 (C-3'),72.6 (C-4'),79.1(C-5'),63.4 (C-6'),106.3 (C-1″),75.6 (C-2″),79.1 (C-3″),72.5 (C-4″),79.0 (C-5″),63.4 (C-6″)。以上數(shù)據(jù)與文獻(xiàn)[19] 報道基本一致,故鑒定為goshonoside F5。
化合物16:白色無定形粉末,ESI-MSm/z:321.5 [M-H]-。1H-NMR (600 MHz,C5D5N)δ:5.81 (1H,t,J=7.8 Hz,H-14),4.62 (2H,brd,J=7.8 Hz,H-15),4.37 (1H,dd,J=6.0,12.6 Hz,H-3),4.53 (1H,dd,J=12.0 Hz,H-18a);13C-NMR (150 MHz,C5D5N)δ:38.6 (C-1),28.3 (C-2),72.3 (C-3),43.9 (C-4),47.3 (C-5),24.7 (C-6),37.6 (C-7),149.4(C-8),56.9 (C-9),40.0 (C-10),23.0 (C-11),39.4 (C-12),138.2 (C-13),126.2 (C-14),59.5 (C-15),17.5 (C-16),107.0 (C-17),74.6 (C-18),13.3 (C-19),15.8 (C-20),105.9 (C-1'),75.3 (C-2'),78.9 (C-3'),72.7(C-4'),77.2 (C-5'),69.1 (C-6'),110.7 (C-1″),83.7 (C-2″),79.0 (C-3″),86.4 (C-4″),63.2 (C-5″)。以上數(shù)據(jù)與文獻(xiàn)[20] 報道基本一致,故鑒定為goshonoside F6。
化合物17:白色粉末,ESI-MSm/z:603.1[M-H]-。1H-NMR (600 MHz,C5D5N)δ:7.12(1H,dd,J=9.6,2.4 Hz,H-6'),3.99 (1H,m,H-9'b),3.89 (2H,m,H-9),3.75 (1H,m,H-8'),3.65 (1H,m,H-9'a),2.92 (2H,t,J=7.2 Hz,H-7),2.14 (2H,m,H-8);13C-NMR (150 MHz,C5D5N)δ:88.6 (C-2),55.6 (C-3),64.8 (C-3a),117.9 (C-4),130.2(C-4a),136.9 (C-5),33.1 (C-5a),36.5 (C-5b),61.9 (C-5c),114.0 (C-6),145.1 (C-7),147.7 (C-7a),139.2 (C-1'),104.5 (C-2',6'),154.5 (C-3',5'),136.7 (C-4'),116.5(C-5'),120.9 (C-6'),74.1 (C-7'),88.4 (C-8'),61.7 (C-9'),56.7 (7-OCH3),56.5 (3',5'-OCH3),77.2 (3'-OCH3)。以上數(shù)據(jù)與文獻(xiàn)[21] 報道基本一致,故鑒定為dihydrobuddlenol。
化合物18:無色油狀物,ESI-MSm/z:207.1[M-H]-。1H-NMR (600 MHz,CD3OD)δ:6.87(1H,m,H-9),6.16 (1H,dd,J=16.0,1.5 Hz,H-8),4.02 (1H,m,H-3),2.36 (1H,dd,J=17.0,5.5 Hz,H-4β),2.02 (1H,dd,J=17.0,10.0Hz,H-4α),1.96 (3H,dd,J=7.0,1.4 Hz,H-10),1.74 (1H,dd,J=12.0,2.0 Hz,H-2β),1.50 (1H,m,H-2α);13C-NMR (150 MHz,CD3OD)δ:204.3 (C-7),149.8 (C-9),140.7 (C-5),135.4 (C-8),130.2 (C-6),65.2 (C-3),48.6 (C-4),41.6(C-2),37.2 (C-1),30.3 (C-12),29.6 (C-11),21.4 (C-13),18.6 (C-10)。以上數(shù)據(jù)與文獻(xiàn)[22] 報道基本一致,故鑒定為 (S)-3-hydroxy-β-ionone。
化合物19:白色針狀結(jié)晶,ESI-MSm/z:319.6 [M-H]-。1H-NMR (600 MHz,DMSO-d6)δ:3.66 (1H,dd,J=4.5,12.0 Hz,H-3),5.38(1H,t,J=6.3 Hz,H-14);13C-NMR (150 MHz,DMSO-d6)δ:39.3 (C-1),29.5 (C-2),73.2(C-3),45.2 (C-4),48.4 (C-5),28.8 (C-6),37.9 (C-7),147.8 (C-8),58.2 (C-9),40.5(C-10),24.9 (C-11),39.0 (C-12),135.7 (C-13),123.7 (C-14),58.3 (C-15),19.2 (C-16),107.5 (C-17),67.8 (C-18),13.4 (C-19),15.7 (C-20)。以上數(shù)據(jù)與文獻(xiàn)[5] 報道基本一致,故鑒定為13 (E)-對映-勞丹烷-8 (17),13-二烯-3β,15,18-三醇。
化合物20:淡黃色油狀(甲醇),ESI-MSm/z:435.3 [M-H]-。1H-NMR (600 MHz,CD3OD)δ:3.70 (2H,dd,J=11.3,3.5 Hz,H-9),3.63(2H,m,H-9');13C-NMR (150 MHz,CD3OD)δ:134.5 (C-1,1'),105.5 (C-2,2',6,6'),149.7 (C-3,3',5,5'),137.6 (C-4,4'),84.3 (C-7,7'),56.7 (C-8,8'),62.7 (C-9,9'),56.8 (3,3',5,5'-OCH3)。以上數(shù)據(jù)與文獻(xiàn)[23] 報道基本一致,故鑒定為icariol A2。
化合物21:白色粉末,ESI-MSm/z:359.6[M-H]-。1H-NMR (600 MHz,CD3OD)δ:3.84(2H,m,H-8,8'),6.82 (2H,dd,J=1.8,8.4 Hz,H-6,6'),4.33 (2H,m,H-9a,9'a);13C-NMR (150 MHz,CD3OD)δ:133.6 (C-1,1'),111.0 (C-2,2'),149.3 (C-3,3'),56.6(3,3'-OCH3),147.5 (C-4,4'),116.2 (C-5,5'),120.4 (C-6,6'),87.9 (C-7,7'),55.8(C-8,8'),72.9 (C-9,9')。以上數(shù)據(jù)與文獻(xiàn)[24] 報道基本一致,故鑒定為(+)-松脂醇。
化合物22:白色粉末,ESI-MSm/z:629.3[M-H]-。1H-NMR (600 MHz,CD3OD)δ:5.29(1H,t,J=6.8 Hz,H-14),4.33 (1H,dd,J=6.0,12.6 Hz,H-3),3.87 (1H,dd,J=12.0 Hz,H-18a);13C-NMR (150 MHz,C5D5N)δ:38.2 (C-1),24.8 (C-2),85.8 (C-3),39.6(C-4),56.5 (C-5),25.3 (C-6),39.2 (C-7),149.4 (C-8),56.6 (C-9),40.2 (C-10),23.0(C-11),39.4 (C-12),146.4 (C-13),121.8(C-14),66.6 (C-15),17.3 (C-16),107.2 (C-17),29.0 (C-18),13.6 (C-19),15.9 (C-20),102.2 (C-1'),75.8 (C-2'),79.2 (C-3'),72.6(C-4'),79.1 (C-5'),63.4 (C-6'),102.3 (C-1″),75.6 (C-2″),79.1 (C-3″),72.5 (C-4″),79.0 (C-5″),63.4 (C-6″),以上數(shù)據(jù)與文獻(xiàn)[25] 報道基本一致,故鑒定為gomojoside J。
覆盆子葉具有清熱解毒及抗腫瘤等作用,課題組在覆盆子果實(shí)和莖的基礎(chǔ)之上對葉的化學(xué)成分進(jìn)行研究,得到22 個化合物,進(jìn)一步豐富了覆盆子的化學(xué)成分,并為尋找抗腫瘤活性成分奠定了基礎(chǔ)。