Paxillarines A and B, new steroidal alkaloids from Pachysandra axillaris, and conformation of their ring A moieties | |
Qui, MH ; Nie, RL ; Nakamura, N ; Kikuchi, T | |
刊名 | CHEMICAL & PHARMACEUTICAL BULLETIN
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1996 | |
卷号 | 44期号:11页码:2015-2019 |
关键词 | Nmr Paxillarine a Paxillarine b Pachysandra Axillaris Rotational Isomerism Steroidal Alkaloid |
ISSN号 | 0009-2363 |
英文摘要 | Two new steroidal alkaloids, paxillarines A (1) and B (2), were isolated from Pachysandra axillar is. Their structures were determined by means of spectrometric methods as 3 alpha-N-methylbenzoylamino-4 beta-acetoxy-16 beta-hydroxy-20 alpha-dimethylamino-5 alpha-pregnane and 3 alpha-N-methylbenzoylamino-4 beta-acetoxy-12 beta-hydroxy-20 alpha-dimethylamino-5 alpha-pregnane, respectively. Some of the expected characteristic H-1-NMR signals were not observed due to hindered rotation when the spectra were measured on a 400 MHz spectrometer, although all of the signals appeared clearly on a 90 MHz machine, The conformation of the ring A moiety of these alkaloids is discussed. |
学科主题 | Chemistry, Medicinal ; Chemistry, Multidisciplinary ; Pharmacology & Pharmacy |
语种 | 英语 |
公开日期 | 2012-03-21 |
内容类型 | 期刊论文 |
源URL | [http://ir.kib.ac.cn:8080/handle/151853/4070] ![]() |
专题 | 昆明植物研究所_植物化学与西部植物资源持续利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Qui, MH,Nie, RL,Nakamura, N,et al. Paxillarines A and B, new steroidal alkaloids from Pachysandra axillaris, and conformation of their ring A moieties[J]. CHEMICAL & PHARMACEUTICAL BULLETIN,1996,44(11):2015-2019. |
APA | Qui, MH,Nie, RL,Nakamura, N,&Kikuchi, T.(1996).Paxillarines A and B, new steroidal alkaloids from Pachysandra axillaris, and conformation of their ring A moieties.CHEMICAL & PHARMACEUTICAL BULLETIN,44(11),2015-2019. |
MLA | Qui, MH,et al."Paxillarines A and B, new steroidal alkaloids from Pachysandra axillaris, and conformation of their ring A moieties".CHEMICAL & PHARMACEUTICAL BULLETIN 44.11(1996):2015-2019. |
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