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Novel title cpds of formula: (where X = opt. substd. amino, R = a carboxylic acid radical opt. as the amide, salt ester or thioester, R1 = -CH2-C triple bond C-R7 or -CH=C=CH-R7 and R7 = H or opt. substd. alkyl, aralkyl or aryl) and their acid addn salts are prepd. by reaction of a penicillanic acid with a strong base and a cpd. ZCH2C triple bond CR7 (where Z = a reactive gp).
NL7200673A1972-01-171972-01-17Cephalosporin and penicillin inters -1 - (1-carboxy-2-methyl -1-propenyl)-3-opt substd amino-4-(propargyl or allenyl-thio) azetidi
NL7200673A
(en)
PROCEDURE FOR THE PREPARATION OF THE ALFA ISOMER 2-CHLORINE-9- (3`- (N`-HYDROXYETHYL-PIPERAZINO-N) -PROPYLIDENE) -THIAXANTENE, ALIFATIC CARBOXYLIC ACID ESTERS WITH 1-16 CARBADONE