title: Porwenins A and B, new clerodane diterpenoids from Portulaca okinawensis.
abstract: Two new clerodane-type diterpenes, porwenins A (1) and B (2), were isolated from Portulaca okinawensis, and the structures were elucidated by spectroscopic data.
authors: Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, 101-0062, Japan. jkobay@pharm.hokudai.ac.jp
authors: A
authors: A
authors: Ohsaki
authors: M
authors: M
authors: Ogawa
authors: Y
authors: Y
authors: Imai
authors: T
authors: T
authors: Shinzato
authors: H
authors: H
authors: Shigemori
authors: J
authors: J
authors: Kobayashi
mesh_terms: D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D007564:Japan; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
chemical_list: D004224:Diterpenes; C433606:porwenin A; C433607:porwenin B