Suppamit Dettrakul. Characterisation of biologically active compounds from the fungus diaporthe sp. BCC 6140, and from higher plant, cordia globifera . Doctoral Degree(Organic Chemistry). Mahidol University. : Mahidol University, 2006.
Characterisation of biologically active compounds from the fungus diaporthe sp. BCC 6140, and from higher plant, cordia globifera
Abstract:
Chemical investigation of the culture broth of the fungus, Diaporthe sp. BCC
6140, led to the isolation and structure elucidation of two new pimarane diterpenoids,
named diaportheins A (I.44) and B (I.45), together with two known cytochalasins I.46
and I.47. Diaporthein B (I.45) strongly inhibited the growth of Mycobacterium
tuberculosis, and possessed antimalarial activity, and cytotoxicity towards NCI-H187,
KB, BC-1, and Vero cell lines, while diaporthein A (I.44) showed only mild activity.
The isolation of the root extracts of Cordia globifera yielded a new 10-
membered compound, named globiferin (II.83), as well as six known constituents,
alliodorin (II.1a), cordiachromene A (II.4), cordiaquinol C (II.5), cordiachromes B
(II.11) and C (II.12), and elaeagin (II.23). These isolated compounds showed
interesting biological activities, e. g. antimalarial, antimycobacterial, and antifungal
activities, cytotoxicity towards NCI-H187, KB, BC, and Vero cell lines.