Lipase catalyzed resolution of the quaternary stereogenic center in ketone-derived benzo-fused cyclic cyanohydrins
摘要:
The enantioselective preparation of both enantiomers of the benzo-fused cyanohydrin derived from alpha-tetralone via lipase catalyzed processes is described. The (S)-enantiomer has been obtained as the remaining substrate in the CAL-A catalyzed aminolysis of the methoxyacetylated derivative, using a structurally related amine as the nucleophile. The (R)-enantiomer has been obtained as the product of CAL-A or PSL-C catalyzed hydrolysis of the methoxyacetylated derivative in organic solvents. The resolutions of several structural analogs of this cyanohydrin have been also tested under similar conditions. (C) 2011 Elsevier Ltd. All rights reserved.
Lipase catalyzed resolution of the quaternary stereogenic center in ketone-derived benzo-fused cyclic cyanohydrins
作者:Jesús A. Rodríguez-Rodríguez、Vicente Gotor、Rosario Brieva
DOI:10.1016/j.tetasy.2011.07.004
日期:2011.6
The enantioselective preparation of both enantiomers of the benzo-fused cyanohydrin derived from alpha-tetralone via lipase catalyzed processes is described. The (S)-enantiomer has been obtained as the remaining substrate in the CAL-A catalyzed aminolysis of the methoxyacetylated derivative, using a structurally related amine as the nucleophile. The (R)-enantiomer has been obtained as the product of CAL-A or PSL-C catalyzed hydrolysis of the methoxyacetylated derivative in organic solvents. The resolutions of several structural analogs of this cyanohydrin have been also tested under similar conditions. (C) 2011 Elsevier Ltd. All rights reserved.