A total synthesis of the natural product microcarpalide is described. Ring-closing metathesis of a dienic ester was used as the key step. Mannose was used as the chiral pool material for the construction of the olefinic-acid and a Sharpless asymmetric dihydroxylation reaction provided the chiral precursor for the synthesis of the olefinic-alcohol. (C) 2003 Elsevier Science Ltd. All rights reserved.
The total synthesis of mycestericin A (1) and its 14-epimer 34 is described herein. The Overman rearrangement of an allylic trichloroacetimidate derived from l-tartrate generated a tetra-substituted carbon with nitrogen and subsequent stereoselective transformations afforded the highly functionalized left-half segment, vinyl iodide. Cross-coupling of the vinyl iodide with a chiral organometallic species
A total synthesis of the natural product microcarpalide is described. Ring-closing metathesis of a dienic ester was used as the key step. Mannose was used as the chiral pool material for the construction of the olefinic-acid and a Sharpless asymmetric dihydroxylation reaction provided the chiral precursor for the synthesis of the olefinic-alcohol. (C) 2003 Elsevier Science Ltd. All rights reserved.