Chiral Crotylsilane-Based Approach to Benzoquinoid Ansamycins: Total Synthesis of (+)-Macbecin I
作者:James S. Panek、Feng Xu、Ana C. Rondón
DOI:10.1021/ja974318b
日期:1998.5.1
A highly convergent totalsynthesis of the antitumor antibiotic (+)-macbecin I (1) has been achieved through the homologation of the aldehyde 3 (C5−C21 aromatic fragment) to the E,Z-dienoate 2 by employing a sequential olefination strategy. Subsequent macrolactonization and a final two-step oxidation sequence were the principle steps used to complete the synthesis. Six of the seven syn-stereochemical