A New Generation of “Cholaphanes”: Steroid-Derived Macrocyclic Hosts with Enhanced Solubility and Controlled Flexibility
作者:Khadga M. Bhattarai、Anthony P. Davis、Justin J. Perry、Christopher J. Walter、Stephan Menzer、David J. Williams
DOI:10.1021/jo971272w
日期:1997.11.1
such as carbohydrates in nonpolar media. New features are the externally directed alkyl chains, promoting solubility in organic solvents, and (in the case of 3b/c) reduced conformational freedom resulting from truncation of the steroidal side-chain. In particular, modeling shows that the smallest macrocycle 3c possesses very little flexibility, preferring an open conformation which is also revealed in