Asymmetric synthesis of 6-formyl-1-alkoxycarbonylbicyclo[3.1.0]hex-2-ene-2-carboxylic acids by a novel buffer-mediated rearrangement
摘要:
Asymmetric synthesis of 6-formyl-1-alkoxycarbonylbicyclo[3.1.0]hex-2-ene-2-carboxylic acids has been achieved and the absolute configurations of the products of a novel buffer-mediated rearrangement have been established. (C) 2001 Elsevier Science Ltd. All rights reserved.
Asymmetric synthesis of 6-formyl-1-alkoxycarbonylbicyclo[3.1.0]hex-2-ene-2-carboxylic acids by a novel buffer-mediated rearrangement
摘要:
Asymmetric synthesis of 6-formyl-1-alkoxycarbonylbicyclo[3.1.0]hex-2-ene-2-carboxylic acids has been achieved and the absolute configurations of the products of a novel buffer-mediated rearrangement have been established. (C) 2001 Elsevier Science Ltd. All rights reserved.
Asymmetric monohydrolysis of a series of norbornanederivatives by a thermophilic esterase/lipase library was examined. Three esterases/lipases showed high enantioselectivities toward dialkyl bicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylates with high chemical yields.
A thermophilic enzyme efficiently monohydrolyzed a series of meso diesters, dialkyl bicycle[2.2.1]hept-2,5-diene-2,3-dicarboxylates, in high chemical yields (72-98%) and high enantiomeric purities (>99% e.e.) in all the cases examined. (C) 2002 Elsevier Science Ltd. All rights reserved.