SETT ATT FRAMSTELLA DERIVAT AV DL-7-AMINODESACETOXICEFALOSPORANSYRA ELLER DL-7-TRITYLAMINODESACETOXICEFALOSPORANSYRA

摘要

1366182 Thiazine derivatives ROUSSEL UCLAF 18 Feb 1972 [18 Feb 1971] 57262/73 Divided out of 1366181 Heading C2C The invention comprises novel compounds (VI), (VII), (VIII) and (IX) (including amine salts thereof) in which: Y represents a cyclic imido group, a benzoylamino group or a thiobenzoylamino group; R2 represents either a straight- or branched-chain alkyl group containing 1 to 10 carbon atoms or an aralkyl radical containing from 7 to 15 carbon atoms; and R1 represents an unsubstituted or chlorosubstituted straight- or branched-chain alkyl group containing 1 to 6 carbon atoms, or an aralkyl residue containing 7 to 15 carbon atoms, in the form of the threo or erythro isomer, or a mixture thereof; they are related by the reaction sequence (VI) # (VII) # (VIII) # (IX) and compounds (VI) are made from compounds (V). Compounds (III) and (IV) are also prepared.