A nco—clcrodane diterpcne, teuponin, was isolated from the aerial parts of Teucrium japonicum. Its structure was established as (12S)—19—nor—neo—clcroda— 15a—hydroxy—4,13-diene— 16,15;18,6β;20,12-triolide by...A nco—clcrodane diterpcne, teuponin, was isolated from the aerial parts of Teucrium japonicum. Its structure was established as (12S)—19—nor—neo—clcroda— 15a—hydroxy—4,13-diene— 16,15;18,6β;20,12-triolide by spcctroscopic means. The absolute configuration was determined by X—ray diffraction analysis and CD spectrum.展开更多
文摘A nco—clcrodane diterpcne, teuponin, was isolated from the aerial parts of Teucrium japonicum. Its structure was established as (12S)—19—nor—neo—clcroda— 15a—hydroxy—4,13-diene— 16,15;18,6β;20,12-triolide by spcctroscopic means. The absolute configuration was determined by X—ray diffraction analysis and CD spectrum.
