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- Title
Transformation of Azadiradione to Nimbocinol and 17β-Hydroxynimbocinol, and Structure—Pesticidal-Activity Relationship of Triterpenoids isolated from Azadirachta indica A. Juss. (Neem).
- Authors
Bina S. Siddiqui; Munawwer Rasheed; Shaheen Faizi; Firdous; S. Tariq Ali; Rajput M. Tariq; Syed Naeem-ul-Hassan Naqvi
- Abstract
During studies on the structure—pesticidal-activity relationship of Azadirachta indica constituents, azadiradione (1) was treated with methanolic K2CO3 to obtain 7-deacetyl derivative nimbocinol (2). Unexpectedly, 17β-hydroxynimbocinol (3), reported earlier as a natural product, was also formed. The structure—pesticidal-activity relationship of triterpenoids 116 against Anopheles stephensi Liston is described towards understanding the active functionalities responsible for the pesticidal activity of triterpenoids having apoeuphane(apotirucallane) and gedunin skeleta. The pesticidal activities of triterpenoids 28 are reported for the first time.
- Subjects
AZADIRACHTA; TRITERPENOID saponins; PESTICIDES
- Publication
Helvetica Chimica Acta, 2003, Vol 86, Issue 10, p3342
- ISSN
0018-019X
- Publication type
Article