Isolation and structure elucidation of aza-sesquiterpenoids of protoilludane origin formed by shaken cultures of the fungus Clavicorona divaricata |
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| Authors: | Gianluca Nasini Alberto Arnone Adriana Bava Loana Musso |
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| Affiliation: | 1. C.N.R., Istituto di Chimica del Riconoscimento Molecolare, Sezione “Adolfo Quilico”; Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta” del Politecnico, via Mancinelli 7, 20131 Milano, Italy;2. DISMA, Dipartimento di Scienze Molecolari Agroalimentari, Università di Milano, via Celoria 2, 20133 Milano, Italy |
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| Abstract: | ![]()
Two novel sesquiterpenes of protoilludane origin, the alkaloids divaricatine C and D, have been isolated from MPGB shaken cultures of the fungus Clavicorona divaricata (Basidiomycetes). Their structures were elucidated by means of NMR studies and chemical correlations. The metabolites were weakly active against bacteria and inhibited the germination of the water cress Lepidium sativum. A possible mechanism of their formation from the protoilludane tsugicoline A (2) is suggested. |
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