中草药  2017, Vol. 48 Issue (2): 247-251
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白花败酱草的化学成分研究
阎新佳1, 郑威2, 温静1, 吴健2, 许颖2, 曹磊2, 王洪湘1, 项峥2     
1. 哈尔滨商业大学 药学部, 黑龙江 哈尔滨 150076;
2. 哈尔滨商业大学 生命科学与环境科学研究中心, 黑龙江 哈尔滨 150076
摘要: 目的 对白花败酱草 Patrinia villosa的化学成分进行研究。 方法 通过大孔吸附树脂、Sephadex LH-20、反相HPLC等多种色谱方法分离纯化,根据理化性质和波谱数据鉴定化合物结构。 结果 从白花败酱草干燥全草的70%乙醇提取物中分离得到了14个化合物,分别鉴定为异地芰普内酯(1)、citroside A(2)、grasshopper ketone(3)、( E)-4-hydroxy-3,3,5-trimethy1-4-(3-oxobut-1-en-1-yl)-cyclohexan-1-one(4)、bluemenol A(5)、pubinernoid A(6)、刺槐素(7)、葛根素(8)、5-(1'-hydroxyethyl)-methyl nicotinate(9)、2-[4-(3-hydroxypropyl)-2-methoxyphenoxy]-propane-1,3-diol(10)、1- O-(β- D-glucosyl)-2-[2-methoxy-4-(3-hydroxypropyl)-phenoxy]-propan-3-ol(11)、二氢芥子醇(12)、3,5-dimethoxyl-4-hydroxyl-phenylpropanol-9- O-β- D-glucopyranoside(13)、2-phenylethyl-α- L-arabinopyranosyl-(1"→6')-β- D-glucopyranoside(14)。 结论 所有化合物均为首次从败酱属植物中分离得到。
关键词: 白花败酱草     异地芰普内酯     citroside A     bluemenol A     pubinernoid A     刺槐素     葛根素    
Chemical constituents of Patrinia villosa
YAN Xin-jia1, ZHENG Wei2, WEN Jing1, WU Jian2, XU Ying2, CAO Lei2, WANG Hong-xiang1, XIANG Zheng2     
1. College of Pharmacy, Harbin University of Commerce, Harbin 150076, China;
2. Center of Research on Life Science and Environmental Science, Harbin University of Commerce, Harbin 150076, China
Abstract: Objective To study the chemical constituents of Patrinia villosa. Methods Compounds were isolated by a combination of various chromatographic techniques including column chromatography over macroporous resin, Sephadex LH-20, and reversed-phase HPLC. Their structures were elucidated by physiochemical property and spectral analysis. Results Fourteen compounds were isolated and identified as isololiolide(1), citroside A(2), grasshopper kectone(3),( E)-4-Hydroxy-3, 3, 5-trimethy1-4-(3-oxobut-1-en-1-yl)-cyclohexan-1-one(4), bluemenol A(5), pubinernoid A(6), robinin(7), puerarin(8), 5-(1'-hydroxyethyl)-methyl nicotinate(9), 2-[4-(3-hydroxypropyl)-2-methoxyphenoxy]-propance-1, 3-diol(10), 1- O-(β- D-glucosyl)-2-[2-methoxy-4-(3-hydroxypropyl)-phenoxy]-propan-3-ol(11), dihydrosinapyl alcohol(12), 3, 5-dimethoxyl-4-hydroxyl-phenylpropanol-9- O-β- D-glucopyranoside(13), and 2-phenylethy-α- L-arabinopyranosyl-(1"→6')-β- D-glucopyranoside(14). Conclusion All compounds are isolated from the plants of Patrinia Juss. for the first time.
Key words: Patrinia villosa(Thunb.) Juss.     isololiolide     citroside A     bluemenol A     pubinernoid A     robinin     puerarin    

白花败酱草Patrinia villosa (Thunb.) Juss.,别名苦荠公、苦斋、败酱草、胭脂麻、苦益菜、萌菜,是败酱科(Valerianaceae)败酱属Patrinia Juss. 植物,其性味苦、寒,无毒,具有散瘀消肿、活血排脓、治肠痈有脓、血气心腹痛、目赤障膜弩肉及敷疮疖疥癣等功效;主要用于治疗阑尾炎、痢疾、肝炎、扁桃体炎、痈肿疮毒等症[1-2]。本课题组曾对白花败酱草的化学成分进行过系统的研究,从中得到了一系列结构新颖且具有药理活性的化合物[3-5]。本实验对白花败酱草干燥全草的70%乙醇提取物进行分离纯化,从中分离得到了14个单体化合物,分别鉴定为异地芰普内酯(isololiolide,1)、citroside A(2)、grasshopper ketone(3)、(E)-4-hydroxy-3,3,5-trimethy1- 4-(3-oxobut-1-en-1-yl)-cyclohexan-1-one(4)、bluemenol A(5)、pubinernoid A(6)、刺槐素(robinin,7)、葛根素(puerarin,8)、5-(1′-hydroxyethyl)-methyl nicotinate(9)、2-[4-(3-hydroxypropyl)-2-methoxyphenoxy]- propane-1,3-diol(10)、1-O-(β-D-glucosyl)-2-[2- methoxy-4-(3-hydroxypropyl)-phenoxy]-propan-3-ol(11)、二氢芥子醇(12)、3,5-dimethoxyl-4- hydroxyl-phenylpropanol-9-O-β-D-glucopyranoside(13)、2-phenylethyl-α-L-arabinopyranosyl-(1″→6′)-β- D-glucopyranoside(14)。所有化合物均为首次从败酱属植物中分离得到。

1 仪器与材料

Bruker ARX 400 MHz核磁共振波谱仪(Bruker公司,TMS作内标);Bruker micro-Q-Tof高分辨质谱仪(Bruker公司,瑞士);Waters Pro 150制备高效液相色谱仪(Waters公司,美国);YMC ODS-A制备色谱柱(250 mm×10 mm,5 μm);YMC ODS-A分析色谱柱(150 mm×4.6 mm,5 μm)。

柱色谱硅胶(100~200目,200~300目)、薄层色谱硅胶H(300~400目)、GF254(青岛海洋化工厂);ODS柱色谱填料(60~80 μm,德国Merck);Sephadex LH-20(20~100 μm,美国Pharmacia Fine Chemical 有限公司);AB-8大孔吸附树脂(天津浩聚树脂科技有限公司)。

白花败酱草药材购于河北新祁中药饮品公司,经哈尔滨商业大学吴健博士鉴定为白花败酱草Patrinia villosa (Thunb.) Juss.。

2 提取与分离

白花败酱全草15 kg,以70%乙醇回流提取3次,每次2 h,合并提取液,提取液减压浓缩得到浸膏约1 kg。以适量水溶解后用大孔吸附树脂柱色谱分离,依次用纯水和10%、30%、50%、95%乙醇梯度洗脱。其中50%乙醇部分(100 g)经硅胶柱色谱分离,氯仿-甲醇(100∶1→1∶1)梯度洗脱,得到流分Fr. 1~10。其中Fr. 3通过ODS开放柱色谱以甲醇-水(10%~9 0%)梯度洗脱得到4个流分Fr. 3-1~3-4。Fr. 3-4经过Sephadex LH-20柱色谱分离得到4个流分Fr. 3-4-1~3-4-4,Fr. 3-4-4通过制备HPLC得到化合物1(10 mg)。Fr. 3-2通过硅胶开放柱色谱,二氯甲烷-甲醇(100∶0→0∶100)梯度洗脱得到5个流分Fr. 3-2-1~3-2-5,Fr. 3-2-4通过HPLC分 离 得到化合物2(12 mg)、3(10 mg)、4(10 mg);Fr. 3-2-5通过HPLC分离得到化合物5(14 mg)、6(9 mg)、7(10 mg)、8(20 mg)。Fr. 4通过ODS开放柱色谱以甲醇-水(10%~60%)梯度洗脱,共得到4个流分Fr. 4-1~4-4;Fr. 4-1通过HPLC分离得到化合物9(6 mg)、10(9 mg)、11(18 mg);Fr. 4-2通过HPLC分离得到化合物12(11 mg)、13(10 mg);Fr. 4-3通过HPLC分离得到化合物14(5 mg)。

3 结构鉴定

化合物1:白色粉末(甲醇)。10%硫酸香草醛显色呈紫红色;1H-NMR (400 MHz,DMSO-d6) δ: 2.29 (1H,dd,J = 13.3,2.5 Hz,H-2a),1.62 (1H,m,H-2b),4.08 (1H,tt,J = 11.2,4.2 Hz,H-3),1.87 (1H,m,H-4a),1.41 (1H,m,H-4b),5.78 (2H,brs,H-8),1.18 (3H,s,H-10),1.38 (3H,s,H-11),1.67 (3H,s,H-12);13C-NMR (100 MHz,DMSO-d6) δ: 34.7 (C-1),47.4 (C-2),63.0 (C-3),49.7 (C-4),86.4 (C-5),170.9 (C-7),112.3 (C-8),181.8 (C-9),26.2 (C-10),29.7 (C-11),24.6 (C-12)。以上数据与文献报道[6]基本一致,故鉴定化合物1为异地芰普内酯。

化合物2:白色无定形粉末(甲醇),10%硫酸香草醛显色呈紫红色;1H-NMR (400 MHz,DMSO-d6) δ: 1.78 (1H,d,J = 10.0 Hz,H-2),1.17 (1H,dd,J = 10.0,6.5 Hz,H-2),4.14 (1H,m,H-3),2.37 (1H,d,J = 11.5 Hz,H-4a),1.21 (1H,dd,J = 11.5,6.5 Hz,H-4b),5.85 (1H,brs,H-7),2.11 (3H,s,H-10),1.04 (3H,s,H-11),1.27 (3H,s,H-12),1.32 (3H,s,H-13),4.34 (1H,d,J = 7.5 Hz,H-1′),2.90 (1H,m,H-2′),3.14 (1H,m,H-3′),2.99 (1H,m,H-4′),3.05 (1H,m,H-5′),3.61 (1H,m,H-6a′),3.36 (1H,m,H-6b′);13C-NMR (100 MHz,DMSO-d6) δ: 35.5 (C-1),49.2 (C-2),61.1 (C-3),46.0 (C-4),77.0 (C-5),117.5 (C-6),210.7 (C-7),99.9 (C-8),197.6 (C-9),26.3 (C-10),31.8 (C-11),29.1 (C-12),26.4 (C-13),96.9 (C-1′),73.7 (C-2′),77.4 (C-3′),70.2 (C-4′),76.7 (C-5′),61.1 (C-6′)。以上数据与文献报道[7]基本一致,故鉴定化合物2为citroside A。

化合物3:黄色针状结晶(甲醇),10%硫酸香草醛显色呈紫红色;1H-NMR (400 MHz,DMSO-d6) δ: 1.81 (1H,m,H-2a),1.19 (1H,m,H-2b),4.03 (1H,m,H-3),2.04 (1H,m,H-4a),1.23 (1H,m,H-4b),5.75 (1H,brs,H-7),2.10 (3H,s,H-10),1.05 (3H,s,H-11),1.26 (3H,s,H-12),1.30 (3H,s,H-13);13C-NMR (100 MHz,DMSO-d6) δ: 35.6 (C-1),49.3 (C-2),62.0 (C-3) 49.6 (C-4),70.6 (C-5),118.7 (C-6),209.2 (C-7),99.6 (C-8),197.6 (C-9) 26.1 (C-10),31.6 (C-11),28.7 (C-12),30.4 (C-13)。以上数据与文献报道[8]基本一致,故鉴定化合物3为grasshopper ketone。

化合物4:无色油状物(甲醇),10%硫酸香草醛显色呈紫红色,易溶于甲醇、乙醇等溶剂;1H-NMR (400 MHz,DMSO-d6) δ: 2.74 (1H,dd,J = 13.6,2.1 Hz,H-2a),1.75 (1H,dd,J = 13.3,2.1 Hz,H-2b),2.35 (1H,m,H-4a),2.04 (1H,m,H-4b),1.64 (1H,m,H-5),6.87 (1H,d,J = 16.1 Hz,H-7),6.29 (1H,d,J = 16.1 Hz,H-8),2.26 (3H,s,H-10),0.91 (3H,s,H-11),0.86 (3H,s,H-12),0.79 (3H,d,J = 6.1 Hz,H-13);13C-NMR (100 MHz,DMSO-d6) δ: 42.7 (C-1),51.0 (C-2),210.0 (C-3),44.5 (C-4),35.5 (C-5),76.9 (C-6),150.5 (C-7),131.1 (C-8),197.8 (C-9),27.1 (C-10),24.4 (C-11),24.4 (C-12),15.9 (C-13)。以上数据与文献报道[9]一致,故鉴定化合物4为 (E)-4-hydroxy- 3,3,5-trimethy1-4-(3-oxobu-1-en-1-yl)-cyclohexan-1-one。

化合物5:无色油状物(甲醇),10%硫酸香草醛显色呈棕黄色;1H-NMR (400 MHz,DMSO-d6) δ: 2.35 (1H,d,J = 16.7 Hz,H-2a),2.06 (1H,d,J = 16.7 Hz,H-2b),5.78 (1H,brs,H-4),5.69 (1H,d,J = 15.7 Hz,H-7),5.64 (1H,d,J =15.7 Hz,H-8),4.18 (1H,d,J = 6.4 Hz,H-9),1.11 (3H,s,H-10),0.92 (3H,s,H-11),0.91 (3H,s,H-12),1.81 (3H,d,J = 1.2 Hz,H-13);13C-NMR (100 MHz,DMSO-d6) δ: 40.9 (C-1),49.4 (C-2),197.3 (C-3),125.5 (C-4),164.4 (C-5),77.8 (C-6),135.9 (C-7),127.9 (C-8),66.1 (C-9),24.1 (C-10),23.0 (C-11),24.0 (C-12),19.0 (C-13)。以上数据与文献报道[10]基本一致,故鉴定化合物5为bluemenol A。

化合物6:白色无定形粉末(甲醇)。10%硫酸香草醛显色呈红色;1H-NMR (400 MHz,DMSO-d6) δ: 1.63 (1H,dd,J = 13.4,3.9 Hz,H-1),1.41 (1H,m,H-1),4.99 (1H,m,H-2),2.29 (1H,dt,J = 13.2 Hz,H-3a),1.87 (1H,dt,J = 13.2 Hz,H-3b),5.77 (1H,brs,H-6),1.37 (3H,s,H-9),1.19 (3H,s,H-10),1.63 (3H,s,H-11);13C-NMR (100 MHz,DMSO-d6) δ: 46.6 (C-1),64.9 (C-2),45.3 (C-3),86.5 (C-4),183.1 (C-5),112.1 (C-6),171.1 (C-7),35.7 (C-8),26.2 (C-9),30.5 (C-10),26.8 (C-11)。以上数据与文献报道[11]一致,故鉴定化合物6为pubinernoid A。

化合物7:黄色无定形粉末(甲醇)。10%硫酸香草醛显色呈黄色;易溶于甲醇、乙醇等溶剂;紫外365 nm下呈黄色荧光,提示可能为黄酮类化合物;1H-NMR (400 MHz,DMSO-d6) δ: 6.44 (1H,d,J = 2.2 Hz,H-6),6.78 (1H,d,J = 2.2 Hz,H-8),8.08 (2H,d,J = 8.8 Hz,H-2′,6′),6.86 (2H,d,J = 8.8 Hz,H-3′,5′),5.34 (1H,d,J = 7.7 Hz,H-1″),3.38 (1H,m,H-2″),3.56 (1H,m,H-3″),3.58 (1H,m,H-4″),3.39 (1H,m,H-5″),3.60 (1H,m,H-6a″),3.26 (1H,m,H-6b″),4.39 (1H,d,J = 1.6 Hz,H-1′′′),3.29 (1H,m,H-2′′′),3.40 (1H,m,H-3′′′),3.08 (1H,m,H-4′′′),3.62 (1H,m,H-5′′′),1.05 (1H,d,J = 6.1 Hz,H-6′′′),5.54 (1H,d,J = 1.6 Hz,H-1′′′′),3.84 (1H,m,H-2′′′′),3.63 (1H,m,H-3′′′′),3.30 (1H,m,H-4′′′′),3.35 (1H,m,H-5′′′′),1.12 (1H,d,J = 6.1 Hz,H-6′′′′);13C-NMR (100 MHz,DMSO-d6) δ: 157.0 (C-2),133.6 (C-3),177.6 (C-4),160.8 (C-5),99.3 (C-6),161.6 (C-7),94.6 (C-8),156.0 (C-9),105.6 (C-10),120.7 (C-1′),131.0 (C-2′),115.1 (C-3′),160.1 (C-4′),115.1 (C-5′),131.0 (C-6′),101.9 (C-1″),71.1 (C-2″),73.6 (C-3″),70.4 (C-4″),73.0 (C-5″),65.2 (C-6″),100.0 (C-1′′′),70.6 (C-2′′′),70.1 (C-3′′′),71.9 (C-4′′′),68.0 (C-5′′′),17.9 (C-6′′′),98.4 (C-1′′′′),69.8 (C-2′′′′),70.3 (C-3′′′′),71.6 (C-4′′′′),68.2 (C-5′′′′),17.9 (C-6′′′′)。以上数据与文献报道[12]基本一致,因此鉴定化合物7为刺槐素。

化合物8:黄色无定形粉末(甲醇),10%硫酸香草醛显黄色。易溶于甲醇、乙醇等溶剂;紫外365 nm下呈黄色荧光,提示可能为黄酮类成分。1H-NMR (400 MHz,DMSO-d6) δ: 8.34 (1H,s,H-2),7.94 (1H,d,J = 9.0 Hz,H-5),6.99 (1H,d,J = 9.0 Hz,H-6),7.39 (2H,d,J = 8.4 Hz,H-2′,6′),6.80 (2H,d,J = 8.4 Hz,H-3′,5′),4.82 (1H,d,J = 9.9 Hz,H-1″),3.28 (1H,m,H-2″),3.59 (1H,m,H-3″),3.63 (1H,m,H-4″),3.92 (1H,m,H-5″),4.05 (1H,m,H-6a″),3.58 (1H,m,H-6b″);13C-NMR (100 MHz,DMSO-d6) δ: 152.6 (C-2),123.0 (C-3),174.9 (C-4),126.2 (C-5),115.0 (C-6),161.1 (C-7),112.7 (C-8),157.1 (C-9),116.8 (C-10),122.5 (C-1′),130.2 (C-2′),115.0 (C-3′),157.2 (C-4′),115.0 (C-5′),130.2 (C-6′),78.8 (C-1″),73.4 (C-2″),70.9 (C-3″),70.5 (C-4″),81.8 (C-5″),61.4 (C-6″)。以上数据与文献报道[13]基本一致,故鉴定化合物8为葛根素。

化合物9:无色油状物(甲醇),易溶于甲醇、氯仿等溶剂;1H-NMR (400 MHz,DMSO-d6) δ: 9.60 (1H,s,H-2),8.41 (1H,s,H-4),8.76 (1H,s,H-6),4.97 (1H,q,J = 6.5 Hz,H-1′),1.49 (3H,d,J = 6.5 Hz,H-2′),3.96 (3H,s,H-2″);13C-NMR (100 MHz,DMSO-d6) δ: 149.7 (C-2),126.1 (C-3),135.8 (C-4),143.8 (C-5),151.8 (C-6),68.0 (C-1′),25.3 (C-2′),166.9 (C-1″),53.0 (C-2″)。以上数据与文献报道[14]基本一致,故鉴定化合物9为5-(1′-hydroxyethyl)- methyl nicotinate。

化合物10:黄色油状物(甲醇),10%硫酸香草醛显色呈粉红色;易溶于甲醇、氯仿等溶剂;1H-NMR (400 MHz,DMSO-d6) δ: 3.52 (2H,m,H-1),4.04 (1H,m,H-2),3.52 (2H,m,H-3),6.76 (1H,d,J = 1.9 Hz,H-3′),6.64 (1H,dd,J = 8.2,1.9 Hz,H-5′),6.90 (1H,d,J = 8.2 Hz,H-6′),2.60 (2H,m,H-7′),1.66 (2H,m,H-8′),4.42 (2H,m,H-9′),3.70 (3H,s,2′-OCH3);13C-NMR (100 MHz,DMSO-d6) δ: 60.2 (C-1),81.3 (C-2),60.2 (C-3),145.5 (C-1′),149.8 (C-2′),116.4 (C-3′),135.5 (C-4′),120.1 (C-5′),112.9 (C-6′),31.3 (C-7′),34.5 (C-8′),60.3 (C-9′),55.5 (2′-OCH3′)。上述数据与文献报道[15]基本一致,故鉴定化合物10为2-[4-(3-hydroxypropyl)-2- methoxyphenoxy]-propance-1,3-diol。

化合物11:黄色油状物(甲醇)。10%硫酸香草醛显色呈粉红色;易溶于甲醇、氯仿等溶剂;1H-NMR (400 MHz,DMSO-d6) δ: 3.57 (2H,d,J = 11.1 Hz,H-1),4.29 (1H,m,H-2),3.88 (2H,m,H-3),6.79 (1H,d,J = 1.8 Hz,H-3′),6.67 (1H,dd,J = 8.2,1.8 Hz,H-5′),6.97 (1H,d,J = 8.2 Hz,H-63′),2.53 (2H,m,H-7′),1.69 (2H,m,H-8′),4.29 (2H,m,H-9′),3.73 (3H,s,2′-OCH3),4.19 (1H,d,J = 7.8 Hz,H-1″),3.28 (1H,m,H-2″),3.59 (1H,m,H-3″),3.63 (1H,m,H-4″),3.92 (1H,m,H-5″),4.05 (1H,m,H-6a″),3.58 (1H,m,H-6b″);13C-NMR (100 MHz,DMSO-d6) δ: 68.0 (C-1),78.9 (C-2),60.1 (C-3),145.1 (C-1′),149.6 (C-2′),116.1 (C-3′),135.6 (C-4′),120.0 (C-5′),112.8 (C-6′),31.3 (C-7′),34.5 (C-8′),60.2 (C-9′),55.5 (2′-OCH3′),103.5 (C-1″),73.4 (C-2″),76.7 (C-3″),70.0 (C-4″),76.9 (C-5″),61.0 (C-6″)。上述数据与文献报道[16]基本一致,故鉴定化合物11为1-O-(β-D-glucosyl)-2-[2-methoxy- 4-(3-hydroxypropyl)-phenoxy]-p ropan-3-ol。

化合物12:黄色油状物(甲醇)。10%硫酸香草醛显色呈粉红色;易溶于甲醇、氯仿等溶剂;HR-ESI-MS给出准分子离子峰 [M+Na]+ m/z: 235.115 3 (C11H16O4Na,计算值235.114 9),确定该化合物的相对分子质量为212,分子式为C11H16O4,不饱和度为4。1H-NMR (400 MHz,DMSO-d6) δ: 6.84 (1H,s,H-2),6.84 (1H,s,H-6),2.60 (2H,m,H-7),1.87 (2H,m,H-8),3.56 (2H,t,J = 6.5 Hz,H-9),3.86 (6H,s,3,5-OCH3)。上述数据与文献报道[17]基本一致,故鉴定化合物12为二氢芥子醇。

化合物13:黄色油状物(甲醇)。10%硫酸香草醛显色呈粉红色;易溶于甲醇、氯仿等溶剂。HR-ESI-MS给出准分子离子峰 [M+Na]+ m/z: 397.153 0 (C17H26O9Na,计算值397.157 7),确定该化合物的相对分子质量为374,分子式为C17H26O9,不饱和度为5。1H-NMR (400 MHz,DMSO-d6) δ: 6.69 (1H,d,J = 1.5 Hz,H-2),6.69 (1H,d,J = 1.5 Hz,H-6),2.55 (2H,m,H-7),1.69 (2H,m,H-8),3.78 (2H,d,J = 5.6 Hz,H-9),4.91 (1H,d,J = 6.8 Hz,H-1′),3.03 (1H,m,H-2′),3.14 (1H,m,H-3′),3.18 (1H,m,H-4′),3.33 (1H,m,H-5′),3.60 (1H,m,H-6a′),3.49 (1H,m,H-6b′),3.75 (6H,s,3,5-OCH3)。上述数据与文献报道[10]基本一致,故鉴定化合物13为3,5- dimethoxyl-4-hydroxyl-phenylpropanol-9-O-β-D-gluco- pyranoside。

化合物14:无色油状物(甲醇)。10%硫酸香草醛显色呈粉红色;易溶于甲醇、氯仿等溶剂。HR-ESI-MS给出准分子离子峰 [M+Na]+ m/z: 439.157 2 (C19H28O10Na,计算值439.157 5),确定该化合物的相对分子质量为416,分子式为C19H28O10,不饱和度为6。1H-NMR (400 MHz,DMSO-d6) δ: 7.28 (1H,d,J = 4.4 Hz,H-2),7.28 (1H,d,J = 4.4 Hz,H-3),7.20 (1H,m,H-4),4.20 (1H,d,J = 7.6 Hz,H-1′),3.03 (1H,m,H-2′),3.13 (1H,m,H-3′),3.10 (1H,m,H-4′),3.30 (1H,m,H-5′),3.95 (1H,m,H-6a′),3.54 (1H,m,H-6b′),7.28 (1H,d,J = 4.4 Hz,H-5),7.28 (1H,d,J = 4.4 Hz,H-6),2.85 (2H,t,J = 7.6 Hz,H-7),3.93 (2H,q,J = 7.6 Hz,H-8),4.18 (1H,d,J = 6.0 Hz,H-1″),3.38 (1H,m,H-2″),3.34 (1H,m,H-3″),3.60 (1H,m,H-4″),3.65 (1H,m,H-5a″),3.29 (1H,m,H-5b″);13C-NMR (100 MHz,DMSO-d6) δ: 138.8 (C-1),128.9 (C-2),128.2 (C-3),126.0 (C-4) 128.2 (C-5),128.9 (C-6),35.6 (C-7),70.6 (C-8),102.8 (C-1′),70.1 (C-2′),76.6 (C-3′),73.8 (C-4′),75.7 (C-5′),69.5 (C-6′) 103.4 (C-1″),72.5 (C-2″),73.3 (C-3″),68.1 (C-4″),64.9 (C-5″)。上述数据与文献报道[18]基本一致,故鉴定化合物14为2-phenylethy- α-L-arabinopyranosyl-(1″→6′)-β-D-glucopyranoside。

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