(+)-1(S), 5(R), 8(S)-8-phenyl-2-azabicyclo[3.3.0]octan-8-ol n,o-methylboronate (2) and its enantiomer, chiral chemzymes which serve as catalysts for their own enantioselective synthesis
作者:E.J Corey、C.-P Chen、Gregory A Reichard
DOI:10.1016/s0040-4039(01)93796-7
日期:1989.1
An efficient synthesis of (+)-1(S), 5(R), 8(S)-8-phenyl-2-azabicyclo[3.3.0]octan-8-ol (1) and its enantiomer is described. The B-methyloxazaborolidine derivatives (2) of these amino alcohols are excellent catalysts (chemzymes) for the enantioselective reduction of a variety of achiral ketones to chiral secondary alcohols, e.g. acetophenone, 98% ee; pinacolone, 98% ee; α-tetralone, 97% ee; and 2-br
描述了一种有效合成(+)-1(S),5(R),8(S)-8-苯基-2-氮杂双环[3.3.0] octan-8-ol(1)及其对映异构体的方法。这些氨基醇的B-甲基恶唑硼烷衍生物(2)是出色的催化剂(化学酶),用于将多种非手性酮对映选择性还原为手性仲醇,例如乙酰苯,98%ee;品尼高龙,98%ee; α-四氢萘酮,ee达97%;和2-溴-2-环己烯-1-酮(98%ee)。恶唑硼烷2是用于14的对映选择性合成的催化剂,其是合成手性2本身的起始原料。