Taxamycins: a new enediyne family constructed from versatile disilyl-substituted building blocks
作者:Yee Fung Lu、Curtis W. Harwig、Alex G. Fallis
DOI:10.1021/jo00068a011
日期:1993.7
The Pd(0)-based synthesis of two disilyl synthons [(Z)-1-(trimethylsilyl)-6-(tert-butyldiphenylsilyl)hex-3-ene-1,5-diyne (7) and (Z)-1-(trimethylsilyl)-6-(triisopropylsilyl)hex-3-ene-1,5-diyne (8)], selective removal of the trimethylsilyl group (K2CO3, MeOH) to afford 13 and 14, and the construction of the taxamycin-12 compound 25 (16,17,18-trimethyl-2-(monomethyloxy)-9-hydroxybicyclo[9.3.1]pentadec-5-ene-3,7-diyne) by intramolecular Nozaki condensation of the iodoalkyne 24 (1,3,3-trimethyl-2-(2-oxoethyl)-4-((Z)-1-(monomethyloxy)-7-iodohept-4-ene-3,6-diynyl)cyclohexene) is described.