Concise total synthesis and structural revision of (+)-pestalazine B
作者:Carlos Pérez-Balado、Ángel R. de Lera
DOI:10.1039/c0ob00531b
日期:——
A convergent synthesis of the proposed structure of (+)-pestalazine B has been achieved in 4 steps using the N-alkylation of an unprotected tryptophan diketopiperazine with a 3a-bromopyrrolidinoindoline as the key step. Although its structure was confirmed by X-ray analysis, the spectroscopic data did not match those of the natural product. The versatility of the methodology allowed the preparation