Iminophosphorane-mediated synthesis of 1-acyl-β-carbolines: A new access to the alkaloids eudistomin T, S and xestomanzamine A of marine origin
作者:Pedro Molina、Pilar M Fresneda、Sagrario García-Zafra
DOI:10.1016/s0040-4039(97)82962-0
日期:1996.12
described. The key step, formation of the 1-phenylacetyl β- carboline, involves a tandem aza Wittig / electrocyclicringclosure process. The first synthesis of the alkaloid xestomanzamine A is achieved by coupling of a N-protected harmane, now available via aza Wittig / electrocyclicringclosure process, with a 5-lithioimidazole derivative.