Synthetic and mechanistic studies on the antitumor antibiotics esperamicin A1 and calicheamicin .gamma.1. Oxidative functionalization of the 13-ketobicyclo[7.3.1]tridecenediyne core structure: construction of the allylic trisulfide trigger
作者:Philip Magnus、Richard Lewis、Frank Bennett
DOI:10.1021/ja00033a032
日期:1992.3
The simple 13-ketobicyclo[7.3.1]tridecenediyne 3 corestructure of the esperamicins/calicheamicin can be readily functionalized in an oxidative manner to introduce the 1,2 double bond and 3β-oxygen substituent. The 3β-hydroxyl substituent allowed the intramolecular introduction of a nitrogen functionality at C2, but the resulting cyclic carbamate was too resistant to hydrolysis to be synthetically