Plants of the genus Euphorbia have been investigated for different bioactive natural products. I have isolated several new and bioactive diterpenoids from different species of Euphorbia of Iran with myrsinane type skeleton. The structure of the compounds was determined using high resolution mass spectroscopy, 1 D and 2 D NMR spectral data. The stereochemistry of the diterpenoids was determined ...

Anastrepha tehuacana, a new species of Tephritidae (Diptera) from Tehuacán, Puebla, Mexico reared from seeds of Euphorbia tehuacana (Brandegee) V.W. Steinm. (Euphorbiaceae), is described and illustrated. Its probable relationship to A. relicta Hernández-Ortiz is discussed.

Euphorbia wallichii of the family Euphorbiaceae yielded a new rearranged pentacyclic triterpene of the multiflorane class which we have named spirowallichiione. The structure of this natural spirocompound was elucidated with the aid of modern spectroscopic techniques, including 2D-NMR.

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This study deals with the ecology, phytochemistry, and biological activity investigation of Euphorbia retusa, belonging to Euphorbiaceae family, obtained from Egypt. Ecologically, Euphorbia retusa secretes white sap inhibiting the growth of the other species, so Euphorbia retusa is forming complete patches. Phytochemical study of the plant was visualized intensively based on its extraction with...

tDepartment ofApptied Biologieal Seiencq Research Ihstitutesfor Seience and 7lechnology, Science Uhiversity of Tbkyo, IVbdo, eniba278-&SOI, .lapan t71he institute of Physicai and Chemical Research, PPZiko, Saitama 351, lapan gDepartment ofPlant Pathology, Montana State Uhiversity, Bozeman, MT59ZI7. ULS. A. MDepartment of enemistry-Baker Laboratot:y, CorneU Uhivensity, Rhaca, NY 14ss3-l301, UL S...