3,4- seco-Norclerodane Diterpenoids from the Roots of Polyalthia laui.
J Nat Prod
; 82(1): 27-34, 2019 01 25.
Article
em En
| MEDLINE
| ID: mdl-30596489
ABSTRACT
Ten new clerodane diterpenoids, polylauioids A-J (1-10), and five known analogues (11-15) were isolated from the roots of Polyalthia laui. Among the new compounds, 3 and 8 are artifacts. The structures were elucidated using spectroscopic methods and by comparison with published NMR spectroscopic data. The absolute configurations of 4, 5, and 7 were defined based on single-crystal X-ray diffraction and electronic circular dichroism data. Compounds 1 and 2 represent the first examples of rearranged 3,4- seco-norclerodane diterpenoids, and a putative biosynthesis pathway for these compounds is proposed. Compounds 1, 4, 6, 7, 9, and 10 showed anti-HIV activities with EC50 values ranging from 12.2 to 35.2 µM.
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1
Base de dados:
MEDLINE
Assunto principal:
Polyalthia
/
Diterpenos
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article