目的研究地黄Rehmanniaglutinosa块根的化学成分。方法通过正相硅胶、SephadexLH-20以及反相HPLC柱色谱方法对地黄的化学成分进行分离纯化,应用谱学技术鉴定化合物的结构。结果从地黄块根乙醇提取物中分离得到29个化合物,分别鉴定为1,2,5,6-四氢-1-甲基-2-氧代-4-吡啶乙酸(1)、5-deoxyantirrhinoside(2)、5-deoxylamiol(3)、去乙酰野芝麻苷(4)、栀子新苷(5)、genipin-gentiobioside(6)、genamesideC(7)、68-hydroxy-2-oxabicyclo[4.3.0]△^8-9_nonen-l-one(8)、焦地黄素D(9)、焦地黄素E(10)、地黄苷(11)、sculponiside(12)、2-phenylethyl—O-β-9-xylopymnosyl-(1—6)-β-D—glucopyranoside(13)、毛蕊花糖苷(14)、红景天昔(15)、leueoseeptosideA(16)、焦地黄苯乙醇苷D(17)、deacyl-martynoside(18)、焦地黄苯乙醇苷A1(19)、焦地黄苯乙醇苷B1(20)、3,4-dihydroxy—p-phenethyl—O-α-L-rhamnopyranosyl-(1→3)-O-β-D—galacopyranosyl-(1→6)-4-O—caffeoyl-β-D—glucopyranoside(21)、1-(4-methy-2-furanyl)-2-(5-methyl-5-ethenyl-2-tetrahydrofuranyl)-propan-1-one(22)、2-methoxy-4-methylphenyl-O-β-D—apiofuranosyl-(1→6)-β-D-glueopyranoside(23)、rhamnopyranosylvanilloyl(24)、syringicacid-4·O-α-L-rhamnopyranoside(25)、(7R,8S,7'R,8S,7'4,9,4’,9'-tetrahydroxy-3,3'-dimethoxy-7,7'-epoxylignan9-O-β—D-glucopyranoside(26)、1-methyl-1,2,3,4-tetrahydro-β—carboline-3-carboxylicacid(27)、异直蒴苔苷(28)、直蒴苔苷(29)。结论29个化合物包括9个环烯醚萜类(2-10)、11个苯乙醇苷类(11-21)和9个其他类型(1、22-29)化合物,其中化合物1为新化合物,命名为地黄啶,化合物2~8和24-29为首次从该属植物中分离得到。经体外活性筛选发现化合物1、4、13、15、24、25、27和28对D-半乳糖胺诱导的人肝细胞HL-7702损伤有较明显的保护?
Objective To investigate the chemical constituents in the root tubers ofRehmannia glutinosa. Methods The compounds were isolated from the ethanol extract in the root tubers of R. glutinosa by a combination of various chromatographic techniques including column chromatography over silica gel, Sephadex LH-20 columns, and reversed-phase HPLC. The structures were identified by spectroscopic analysis including MS and NMR data. Results Twenty-nine compounds were isolated and identified as 1, 2, 5, 6-tetrahydro-l-methyl-2-oxo-4-pyridineacetic acid (1), 5-deoxyantirrhinoside (2), 5-deoxylamiol (3), lamiol (4), gardoside (5), genipin-gentiobioside (6), genameside C (7), 6β-hydroxy-2-oxabicyclo [4.3.0] A8-9-nonen-l-one (8), jioglutin D (9), jioglutin E (10), martynoside (11), sculponiside (12), 2-phenylethyl-O-β-D-xylopyranosyl-(1→6)-β-D-glucopyranoside (13), acteoside (14), salidroside (15), leucosceptoside A (16), jionoside D (17), deacyl-martynoside (18), jionoside A1 (19), jionoside Bl (20), 3, 4-dihydroxy-β-phenethyl-O-α-L-rhamnopyranosyl( 1→ 3 )-O-β-D-gaoacopyranosyl-( 1→6)-4-O-caffeoyl-β-D-glucopyranoside (21), 1-(4-methy-2-furanyl)-2-(5-methyl-5-ethenyl-2-tetrahydrofuranyl)-propan-l-one (22), 2-methoxy-4-methylphenyl-O-β-D- apiofuranosyl-(1→6)-β-D-glucopyranoside (23), rhamnopyranosyl vanilloyl (24), syringicacid-4-O-ct-L-rhamnopyranoside (25), (TR, 8S, 7'R, 8'S)-4, 9, 4', 9'-tetrahydroxy-3, Y-dimethoxy-7, 7'-epoxylignan 9-O-15-D-glucopyranoside (26), 1-methyl-1, 2, 3, 4-tetrahydro13-carboline-3-carboxylic acid (27), tachioside (28), and isotachioside (29). Conclusion Among the isolated 29 compounds, there are 9 iridoid and iridoid glycosides (2-10), 11 phenethylalcohol glycosides (11-21), and 9 other components (1 and 22-29). Compound 1 is a new compound named rehmannidine, and compounds 24 and 24-29 are isolated from the plants ofReh