Isolation of paspaline B, an indole-diterpenoid from Penicillium paxilli
1996
Munday-Finch, S.C. | Wilkins, A.L. | Miles, C.O.
The known indole-diterpenoids paspaline and 13-desoxypaxilline were isolated from Penicillium paxilli Bainier for the first time. In addition, paspaline B, a new indole-diterpenoid, was isolated and identified as paspalin-30-al by a combination of mass spectral and 1D and 2D NMR techniques. Full assignments for the 13C NMR chemical shifts of paspaline and paspaline B were obtained, resulting in a major revision of the published 13C NMR chemical shifts for paspaline. The structure of paspaline B suggests that it may closely follow paspaline in the biosynthesis of the tremorgenic indole-diterpenoid paxilline.
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