TY - JOUR AB - Six new stemofoline alkaloids, (2?A)-hydroxystemofoline (5), (3?R)-stemofolenol (6), (3?S)-stemofolenol (7), 1?,2?- didehydrostemofoline-AT-oxide (8), the first C19 stemofoline alkaloid, methylstemofoline (9), and the first glycosidated Stemona alkaloid, stemofolinoside (10), and three known alkaloids, (2?S)-hydroxystemofoline (2), (HZ)-1?,2?-didehydrostemofoline (3), and (11E)-1?, 2?-didehydrostemofoline (4), have been isolated from a root extract of an unidentified Stemona species. The structure and relative configuration of these new alkaloids have been determined by spectral data interpretation and from semisynthetic studies. © 2005 American Chemical Society and American Society of Pharmacognosy. AU - Sastraruji, T AU - Jatisatienr, A AU - Pyne, SG AU - Ung, AT AU - Lie, W AU - Williams, MC DA - 2005/12/01 DO - 10.1021/np050361y EP - 1767 JO - Journal of Natural Products PY - 2005/12/01 SP - 1763 TI - Phytochemical studies on Stemona plants: Isolation of stemofoline alkaloids VL - 68 Y1 - 2005/12/01 Y2 - 2024/03/28 ER -