C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/245.1, 260/3
C07D 205/08 (2006.01)
Patent
CA 1140555
Abstract of the Disclosure The invention concerns a process for the manufacture of sulfonic acid esters of 2-[4-(substituted thio)-3- acylamino-2-oxoazetidin-1-yl]-3-hydroxycrotonic acids by esterified of esters of 2-[4-(substituted-thio)-3-acyl- amino-2-oxoazetidin-1-yl]-3-hydroxycrotonic acids with a reactive functional derivate of a sulphonic acid.
344632
Bickel Hans
Woodward Robert B.
Fetherstonhaugh & Co.
Novartis Ag
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