The first total syntheses of (+)-agelasimine-A and (+)-agelasimine-B, adenine-related bicyclicditerpenoids isolated from the marinespongeAgelasmauritiana, have been achieved via a highly stereoselective route. On the basis of the present results, the absolute configurations of both alkaloids have been defined as shown in stereoformulas (+)-1a and (+)-1b, respectively.
Racemic syntheses of agelasimine-A and agelasimine-B, bicyclic diterpenoids from the marine sponge Agelas mauritiana
作者:Masashi Ohba、Nobuo Kawase、Tozo Fujii、Keiichi Aoe、Kimio Okamura、R. Fathi-Afshar、Theresa M. Allen
DOI:10.1016/0040-4039(95)01214-3
日期:1995.8
The first racemicsyntheses of agelasimines-A and -B, adenine-related bicyclicditerpenoidsfrom the marinespongeAgelasmauritiana, have been accomplished by means of routes through the diol 10 as a key intermediate for their common diterpene portion. As a result, their structures and relative stereochemistries have been unequivocally established to be those represented by formulas (±)-1a and (±)-2a