Structural and synthetic studies on the retrofractamides—amide constituents of Piper retrofractum
作者:Avijit Banerji、Debabrata Bandyopadhyay、Manjusha Sarkar、Arup K. Siddhanta、Sudhir C. Pal、Somnath Ghosh、Koshy Abraham、James N. Shoolery
DOI:10.1016/s0031-9422(00)83537-2
日期:1985.2
C, were isolated from the total above-ground parts of Piper retrofractum . Retrofractamide A was shown to be N -isobutyl-9(3′,4′-methylenedioxyphenyl)2 E ,4 E ,8 E -nonatrienamide from spectroscopic and chemical investigations. The structure 6 for retrofractamide C was suggested from spectroscopic and chemical studies and was confirmed by a total stereoselective synthesis. The presence of sesamin and
摘要 从Piper retrofractum 的全部地上部分分离得到两种新的不饱和酰胺,retrofractamides A 和C。光谱和化学研究表明 Retrofractamide A 是 N-isobutyl-9(3',4'-methylenedioxyphenyl)2 E,4 E,8 E-nonatrienamide。反曲霉胺 C 的结构 6 是从光谱和化学研究中提出的,并通过全立体选择性合成得到证实。芝麻素和3,4,5-三甲氧基二氢肉桂酸以及retrofractamide A 的两个高级同系物的存在,即。证明了哌啶(retrofractamide B)和retrofractamide D。也实现了哌啶的合成。