Application of Cross-Conjugated Heteroaromatic Betaines to the Synthesis of the Schizozygane Alkaloid (±)-Strempeliopine
作者:Drew R. Bobeck、Hyoung Ik Lee、Andrew C. Flick、Albert Padwa
DOI:10.1021/jo901336z
日期:2009.10.2
An efficient stereocontrolled route to the isoschizozygane alkaloid core has been developed utilizing an intramolecular1,4-dipolarcycloaddition of a cross-conjugated heteroaromaticbetaine. The resulting cycloadduct undergoes loss of COS, and further reduction delivers a 5a-azaacenaphthylene intermediate that was transformed into the isoschizozygane skeleton upon treatment with acid. A variation