摘要:
Enantiomeric glutarimides such as aminoglutethimide and rogletimide are prepared by cyclisation of a corresponding ester-nitrile which is a good substrate for biotransformation with an enantiospecific esterase.
摘要:
The individual enantiomers of the compounds (Ia), (Ib), (IIa) or (IIb), optionally substituted by non-interfering substituent(s). The novel enantiomers can be obtained by biotransformation. The (Ia) or (IIa) compounds can be used for the synthesis of chiral carbocyclic nucleosides.
摘要:
Lactams of 1-amino-3-carboxylic acid cyclic compounds are provided in enantiomeric form, together with an enantiomer of the corresponding ring-opened amino-acid or ester, by reaction of the racemic lactam with a novel lactamase. The products are useful in the synthesis of chiral carbocyclic nucleotides. The enantiomer is preferably 2-azabicyclo�2.2.1!hept-5-en-3-one.