Journal of the Chemical Society. Perkin transactions I p. 369 - 372 (1985)
Update date:2022-09-26
Topics:
Baxter, Robert L.
McGregor, Christopher J.
Thompson, Gordon A.
Scott, A. Ian
δ-(α-L-Aminoadipoyl)-L-<3-13C>cysteinyl-D-<15N>valine (1a) was efficiently transformed into <4-15N, 5-13C>isopenicillin N (2a) by a cell-free system prepared from cells of Cephalosporium acremonium CW19. 13C N.m.r. spectra of deproteinated incubation mixtures showed 13C-15N coupling of the enriched C-5 resonance of the product, but offered no evidence for the presence of intermediate species.
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