28619-41-2Relevant articles and documents
Stereoselective introduction of oxygen functionalities at the 11β- position of erythrinan skeleton: Total syntheses of (±)-erythristemine and (+)-erythrartine
Isobe,Mohri,Takeda,Suzuki,Hosoi,Tsuda
, p. 197 - 203 (2007/10/02)
Oxidation of 8-oxoerythrinan and 8-oxo-1,7-cycloerythrinan derivatives with 2 mol eq of ceric ammonium nitrate in alcohols or acetic acid gave the corresponding 11β-alkoxy or acetoxy compounds in moderate yield. Thus, (±)- 3,3,15,16-tetramethoxy-1,7-cycloerythrinan-2,8-dione and (+)-erysotramidine gave the corresponding 11β-methoxy and 11β-acetoxy derivatives on oxidation in methanol and in acetic acid, respectively. Those compounds were respectively converted into (±)-erythristemine and (+)-erythrartine in several steps, thus achieving the total synthesis of these alkaloids.
ALKALOID CONSTITUENTS FROM ERYTHRINA XBIDWILLII FLOWERS
Chawla, Amrik Singh,Sood, Ashwani,Kumar, Manoj,Jackson, Anthony H.
, p. 372 - 374 (2007/10/02)
The alkaloids present in the flowers of Erythrina xbidwillii have been screened by GC-MS.A novel alkaloid, erythristemine-N-oxide has been isolated and its structure established by spectroscopic methods.
Stereoselective Methoxylation at the 11β-Position of the Erythrinan Skeleton: Total Synthesis of (+/-)-Erythristemine
Isobe, Kimiaki,Mohri, Kunihiko,Takeda, Naoko,Hosoi, Shinzo,Tsuda, Yoshisuke
, p. 1357 - 1358 (2007/10/02)
Treatment of cis-erythrinan-8-one or 1,7-cyclo-cis-erythrinan-8-one with ceric ammonium nitrate in methanol gave the appreciable yields of the corresponding 11β-methoxy compounds; these were converted into the natural 11-oxygenated erythrinan alkaloid, erythristemine, in high yield.