Stereoselective Synthesis of the C1−C11 and C12−C34 Fragments of Mycalolide A
作者:Thomas J. Hoffman、Amandine Kolleth、James H. Rigby、Stellios Arseniyadis、Janine Cossy
DOI:10.1021/ol101145t
日期:2010.8.6
A convergent synthesis of the C1−C11 and C12−C34 fragments of mycalolide A is described. Synthetic highlights include a highly E-selective cross-metathesis between a vinyl-functionalized bis-oxazole unit and a polypropionate side chain to introduce the C19−C20 double bond and an enzymatic desymmetrization of a meso-diol in addition to five stereoselective allylations/crotylations to control the 11