Zobrazeno 1 - 10
of 116
pro vyhledávání: '"I. Kirson"'
Publikováno v:
ChemInform. 22
In view of the antitumour activity of withanolide E [(20S,22R)-5β,6β-epoxy-14α,17β, 20-trihydroxy 1-oxowitha-2,24-dienolide] and 4β-hydroxywithanolide E, synthetically modified analogues were prepared. In these compounds, the α-orientation of t
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :739-745
In view of the antitumour activity of withanolide E [(20S,22R)-5β,6β-epoxy-14α,17β, 20-trihydroxy 1-oxowitha-2,24-dienolide] and 4β-hydroxywithanolide E, synthetically modified analogues were prepared. In these compounds, the α-orientation of t
Publikováno v:
Journal of Clinical Psychopharmacology. 15:287-288
Publikováno v:
Phytoparasitica. 12:147-155
The geographical distribution of the chemotypes ofWithania somnifera Dun. (Solanaceae) in Israel was re-investigated. In the distribution area of chemotype II (major steroidal constituent, withanolide D), plants of chemotype III (major steroidal cons
Autor:
I. Kirson, Hugo E. Gottlied
Publikováno v:
Organic Magnetic Resonance. 16:20-25
The 13C NMR spectra of 29 highly oxygenated C, steroids with the withanolide skeleton, 24 of which are naturally occurring substances or acetates thereof, were recorded and the carbon signals fully assigned. The shifts of the heavily functionalized A
Publikováno v:
Phytochemistry. 14:189-194
Seven steroidal lactones of the withanolide series have been isolated as minor constituents of the leaves of Withania somnifera Dun. (Solanaceae) chemotype I , along with the major component withaferin A. Structures have been assigned to the new comp
Autor:
Erwin Glotter, I. Kirson
Publikováno v:
Journal of Natural Products. 44:633-647
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :341-346
Four related steroidal lactones of the withanolide group possessing a 17α-oriented side chain have been characterised as (17S,20S,22R)-5β,6β-epoxy-14α,17,20-trihydroxy-1-oxowitha-2,24-dienolide [withanolide E (1)], (17S,20S,22R)-14α,l7,20-trihyd
Publikováno v:
Phytoparasitica. 9:197-205
Eight steroids isolated from solanaceous plants (Physalis, Withania andNicandra species) were investigated as to their antifeedant efficacy for L4 larvae ofEpilachna varivestis Muls. (Coleoptera). Nicalbin A (VII) was a potent antifeedant, but at hig
Autor:
Arye Tishbee, I. Kirson
Publikováno v:
Journal of Chromatography A. 195:425-430