The structure of okolasin, a new alkaloid from piper guineense
β Scribed by B.L. Sondengam; S.F. Kimbu; T. Njimi; J.I. Okogun; D.E.U. Ekong
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- French
- Weight
- 100 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
The chemistry of the genus Piper has been extensively investigated l-4 .
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The isolation, structure and synthesis of 5,6-Z-and E-fadyenolides, the simplest -butenolides of the piperolide series, are reported. We have previously shown that Piper sanctum from Mexico, contains a series of 4-methoxybutenolides (methyl tetronates) with further exocyclic conjugation extending f
During a search for insect antifeeding substances from plant, we found that the benzene extracts of the leaves of m futokadzura Sieb. et Zucc. showed an sntifeeding activity against the larvae of Suodoutera litura F. An active principle has been isolated from the benzene extracts 1) end named pipere