Steroids and polyketides from Uvaria hamiltonii stem bark.
نویسندگان
چکیده
Two known steroids, stigmasterol and 6b-hydroxystigmasta-4,22-dien-3-one (1) and two unusual polyketides, cis-4-hydroxymellein (2) and trans-4-hydroxymellein (3) were isolated from the stem bark of Uvaria hamiltonii. The structures of the compounds were elucidated independently by high-resolution 2D-NMR techniques and confirmed by comparison with previously reported values.
منابع مشابه
Aristolactams from the stem bark of Uvaria hamiltonii.
a voucher specimen has been maintained under the accession number DACB-27943. Although Uvaria hamiltonii growing in Bangladesh has not been studied before, two #avanones, an aurone, a chalcone and a tetrahydroxanthene have been reported from this plant (Huang et al., 1998). A total of "ve aristolactams have been isolated from the stem bark of U. hamiltonii. Four of these were isolated from the ...
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ورودعنوان ژورنال:
- Acta pharmaceutica
دوره 54 1 شماره
صفحات -
تاریخ انتشار 2004