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Note | Regular issue | Vol 75, No. 5, 2008, pp.1191-1197
Published online, 22nd January, 2008
DOI: 10.3987/COM-07-11279
Two Indolotryptanthrin Alkaloids from Cephalantheropsis gracilis

Yao-Ting Wu,* Yu-Lin Hsu, and Pei-Lin Wu*

*Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan, R.O.C.

Abstract

Two alkaloids of indolotryptanthrins, cephathrindole A (1) and B (2), were isolated from Cephalantheropsis gracilis. The structure of cephathrindole A was confirmed by X-ray crystallography whereas cephathrindole B was ascertained by spectroscopic analysis (1D 1H- and 13C-NMR as well as 2D COSY, HMQC, HMBC, and NOESY).