Total Synthesis of the Polyether Antibiotic Lonomycin A (Emericid)
作者:David A. Evans、Andrew M. Ratz、Bret E. Huff、George S. Sheppard
DOI:10.1021/ja00117a014
日期:1995.3
The first asymmetric synthesis of the polyetherantibiotic lonomycin has been achieved. The skeleton is assembled through the synthesis and union of two subunits comprising the CI-CII and C12-C3o portions of the structure. These fragments were constructed utilizing auxiliary-based asymmetric aldol and acylation reactions to control the absolute stereochemical relationships in the structure. The majority
A novel stereoselective route to some uncommon amino acids
作者:Clay Pearson、Kenneth L Rinehart、Michihiro Sugano
DOI:10.1016/s0040-4039(98)02383-1
日期:1999.1
of ad-erythro-β-methylaspartic acid analog was achieved in six steps from commercially available material. Evans' aldol reactions were utilized followed by Weinreb amide formation and Mitsunobu inversion to achieve the necessary stereochemistry of the aminoacid target. The technique was applied to the synthesis of an aspartic acid analog as well as a diaminobutyric acid analog.