New Steroidal Glycosides from Ophiopogon japonicus

Two new C 27 steroidal glycosides, named ophiopojaponin A (1) and B (2), together with two known ones, were isolated from the tubers of the famous traditional Chinese herb Ophiopogon japonicus Ker_Gawl. The spectroscopic and chemical evidence revealed their structures to be pennogenin 3_O_[2′_O_acetyl_α_L_rhamnopyranosyl (1→2)]_β_D_xylopyranosyl (1→3)_β_D_glucopyranoside (1), 26_O_β_D_glucopyranosyl_(22ξ, 25R)_3β, 14α, 22ξ, 26_tetrahydroxyfurost_5_ene 3_O_α_L_rhamnopyranosyl (1→2)_β_D_glucopyranoside (2), diosgenin 3_O_[α_L_rhamnopyranosyl (1→2)]_β_D_xylopyrano_syl (1→3)_β_D_glucopyranoside (3) and ruscogenin 1_O_[α_L_rhamnopyranosyl (1→2)]_β_D_xylopyranosyl (1→3)_β_D_fucopyranoside (4).

Two New Steroidal Glycosides from Ophiopogon japonicus

Two new C-27 steroidal: glycosides, named ophiopojaponin A(1)and B(2), were isolated from the tubers of famous traditional Chinese herb-Ophiopogon japonicus. The spectroscopic and chemical evidences revealed their structures to be Pennogenin 3-O-[2'-O-acetyl-alpha-L-rhamnopyranosyl (1-->2)]-beta-D-xylopyranosyl (1-->3)-beta-D-glucopyranoside (1) and 26-O-beta-D-glucopyranosyl-(22 xi, 25R)-3 beta, 14 alpha, 22 xi, 26-tetrahydroxyfurost-5-ene 3-O-alpha-L-rhamnopyranosyl (1-->2)-beta-D-glucopyranoside (2), respectively.

Two new steroidal glycosides from Ophiopogon japonicus

Two new C27-steroidal glycosides were isolated from the fibrous roots of Ophiopogon japonicus. The spectral analysis and chemical evidence revealed their chemical structures to be （25R）-spirost-5,14-dien-3β-yl-O-α-L-rhamnopyranosyl-（1 → 2）-β-D- xylopyranosyl-（1 → 4）-β-D-glucopyranoside （1） and ophiogenin 3-O-β-D-glucopyranoside （2）.

Two new steroidal glucosides from Ophiopogon japonicus (L.f.) Ker-Gawl

Two new steroidal glucosides, 26-O-β-D-glucopyranosyl （25S）-furost-5-ene-1β,3β,22α,26-tetraol l-O-β-D-xylopyranosyl- （1 → 3）-[α-h-rhamnopyranosyl-（1 → 2）]-[β-D-fueopyranoside and （25R） spirost-5-ene-3β,14α-diol-3-β-O-β-L-rhanmopyranosyl- （1 → 2）-[β-D-xylopyranosyl（1 → 4）]-[-β-D-glucopyranoside, were isolated from the Ophiopogon japonicus （L.f.） Ker-Gaw. Their structures were elucidated by spectroscopic methods.

A new C_(27)-steroidal glycoside from Ophiopogon japonicus

A new C27-steroidal glycoside with three known compounds were isolated from the tuber of Ophiopogonjaponicus （Thunb.） Ker-Gawl. Based on the spectral analysis, including HRMS, 1H NMR, 13C NMR, DEPT, 1H-1H COSY, HMQC and HMBC, their chemical structures were determined as pennogenin-3-O-α-L-rhamnopyranosyl-（1→ 2）-β-D-xylopyranosyl-（1→ 4）-13-D-gluco- pyranoside （1）, pennogenin-3-O-α-L-rhamnopyranosyl-（1→ 2）-β-D-glucopyranoside （2）, ophiopojaponin C （3） and ophiopogonin D （4）. 2007 Jian Zhong Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

麦冬块根化学成分的研究(英文)

从麦冬 (Ophiopogonjaponicus)的块根中分得两个环二肽类化合物 ,一个酰胺类化合物和一个多羟基脂肪酸类化合物。通过光谱数据分析 ,分别鉴定为cyclo- (Phe- Tyr) (1) ,cyclo (Leu- ILe) (2 ) ,N (2 - (4 -hydroxyphenyl)ethyl) - 4 - hydroxycinnamide (3)和天师酸 (4)。这四个化合物均为首次从沿阶草属植物分得。环二肽类化合物为首次从沿阶草属植物中分得的化合物类型。

麦冬的配糖体成分

从川麦冬 ( Ophiopogon jap onicus)根部乙醇提取物中分离得到四个已知化合物 ,经波谱分析确定其结构分别为 :龙脑 7- O- β- D-吡喃葡萄糖甙 ( 1) ,龙脑 7- O- [β- D-呋喃芹糖 ( 1→ 6) ]- β- D-吡喃葡萄糖甙 ( 2 ) ,4 -烯丙基 - 1,2 -苯二酚 1- O- [α- L-吡喃鼠李糖 ( 1→ 6) ]-β- D-吡喃葡萄糖甙 ( 3) ,5-烯 - 1β,3β,16β,2 2 S-胆甾四醇 1- O-α- L -吡喃鼠李糖 16-O-β- D-吡喃葡萄糖甙 ( 4 )。

慈溪麦冬甙A和B的结构(英文)

从浙江慈溪产中药麦冬 (Ophiopogonjaponicum)中分离得到 2个新的C2 7甾体甙———慈溪麦冬甙A ( 2 )和B ( 3)以及已知甙ophiogenin 3-氧 -α -L -鼠李糖 ( 1 2 ) - β -D -葡萄糖吡喃甙 ( 1)。根据光谱和化学证据推定 2个新化合物的结构为ophiogenin 3-氧 -α -L -鼠李糖吡喃基 ( 1 2 ) [β -D -木糖吡喃基 ( 1 3) ]- β -D -葡萄糖吡喃甙 ( 2 )和ophiogenin 3-氧 -α -L -鼠李糖吡喃基 ( 1 2 ) [β -D -木糖吡喃基 ( 1 3) ][β -D -葡萄糖吡喃基 ( 1 4) ]- β -D -葡萄糖吡喃甙 ( 3)。

Liposoluble chemical constituents from the fibrous root of Ophiopogonjaponicas

We investigated the chemical constituents of the fibrous root of Ophiopogon japonicus and their cytotoxicities against Hela and Hep2 cells.Ten compounds were purified by various chromatographic techniques.Their structures were identified as 2 - hydroxylophiopogonone A（1）,5,8-dimethoxy-6-methyl-7-hydroxy-3-（2 -hydroxy-4 -methoxybenzyl） chroman-4-one（2）,5,7- dihydroxy-6,8-dimethyl-3-（4 -hydroxybenzyl） chroman-4-one（3）,7,4 -dihydroxy-5-methoxyflavanone（4）,N-trans-coumaroyltyramine （5）,N-trans-coumaroyloctopamine（6）, N-trans-feruloyltyramine （7）, 4-hydroxycinnamic acid （8）, caffeic acid （9）, and ferulic acid （10） on the basis of spectroscopic analyses. Compounds 4, 6, 7, 9, 10 were obtained from this genus for the first time. The cytotoxic activities of 1, 2, 4, 5, 6, 7, 9 and 10 against Hela and Hep2 cells are described.