| abstract |
An efficient process for the stereoselective production of (2S,4S)-2-[[(R)-hydroxy-(3R)-cyclic amin-3-yl]methyl]pyrrolidine-4-thiol or its salts, which are intermediates useful in producing carbapenem, by reacting a compound represented by general formula (I) (wherein R1 represents lower alkylsulfonyl, optionally substituted arylsulfonyl or alkylsilyl; and R2 represents an amino-protective group) with a compound represented by general formula (II), wherein R3 represents optionally substituted lower alkyl or aryl; X represents oxygen or sulfur; Y represents azido or nitro; and m is an integer of from 2 to 5. |