Steric course of proton removal during the cyclisation of β-cyclopiazonic acid in Penicillium cyclopium
- 1 January 1975
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 12,p. 465-466
- https://doi.org/10.1039/c39750000465
Abstract
Incorporation of (3R)- and (3S)-[3-3H,3-14C] tryptophan into α-cyclopiazonic acid in Pencillium cyclopium Westling proceeds with loss of pro-S-tritium showing that, in the final cyclisation step, formation of the new C–C bond occurs from the opposite side of the molecule to proton removal.Keywords
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