Tetrahedron Letters p. 207 - 210 (1993)
Update date:2022-08-16
Topics:
White, James D.
Toske, Steven G.
Photochemical ring contraction of a cis disubstituted pyrazolidin-3-one, prepared by hydrazinolysis of an α,β-unsaturated δ-lactone, gave the corresponding azetidinone which has been converted previously to the carbapenem antibiotic PS-5.
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