Paxillarines A and B, new steroidal alkaloids from Pachysandra axillaris, and conformation of their ring A moieties

	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
	1996
发表期刊	CHEMICAL & PHARMACEUTICAL BULLETIN
ISSN	0009-2363
卷号	44 期号:11 页码:2015-2019
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.
关键词	Nmr Paxillarine a Paxillarine b Pachysandra Axillaris Rotational Isomerism Steroidal Alkaloid
学科领域	Chemistry, Medicinal ; Chemistry, Multidisciplinary ; Pharmacology & Pharmacy
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/4070
专题	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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