Diterpene esters from ‘Euphorbium’ and their irritant and cocarcinogenic activity

1974 ◽  
Vol 30 (12) ◽  
pp. 1438-1440 ◽  
Author(s):  
M. Hergenhahn ◽  
S. Kusumoto ◽  
E. Hecker
Keyword(s):  
Diterpene Esters

On the Chemistry of Phorbol, XIX [1] Preparation of Tritium-Labelled 12-O-RetinoyIphorbol-13-acetate([20-3H]-RPA)

1988 ◽  
Vol 43 (12) ◽  
pp. 1672-1675 ◽  
Author(s):  
G. L. Tremp ◽  
E. Hecker
Keyword(s):  
Retinoic Acid ◽  
Sodium Borohydride ◽  
Specific Activity ◽  
Diterpene Esters ◽  
Highly Sensitive ◽  
Radioactive Labelling

Abstract In contrast to established principles of radioactive labelling of diterpene esters such as TPA it was impossible to introduce tritium into the highly sensitive 12-0-retinoylphorbol-13-acetate (RPA) via reduction of its cold 20-aldehyde with [3H]-sodium borohydride. As an alternative successful procedure, [20-3H]-phorbol-13-acetate was prepared at first. It was protected in position 20 by reaction with tritylchloride and the tritylether reacted with retinoic acid. In both reactions appropriate phorbol acetates were used as easy to separate cold carriers. After removal of the 20-tritylether group, [20-3H]-RPA of a specific activity was obtained that was sufficient for the compound to be used as a tool in biochemical investigations

Four diterpene esters from Euphorbia myrsinites

1995 ◽  
Vol 38 (6) ◽  
pp. 1457-1462 ◽  
Author(s):  
Sevil Öksüz ◽  
Fali̇ha Gürek ◽  
Roberto R. Gil ◽  
Thitima Pengsuparp ◽  
John M. Pezzuto ◽  
...  
Keyword(s):  
Diterpene Esters

Antitumor Agents, 119. Kansuiphorins A and B, Two Novel Antileukemic Diterpene Esters from Euphorbia kansui

1991 ◽  
Vol 54 (3) ◽  
pp. 823-829 ◽  
Author(s):  
Tian-Shung Wu ◽  
Yuh-Meei Lin ◽  
Mitsumasa Haruna ◽  
De-Ji Pan ◽  
Tetsuro Shingu ◽  
...  
Keyword(s):  
Antitumor Agents ◽  
Diterpene Esters ◽  
Euphorbia Kansui

Macrocyclic diterpene esters of the cytotoxic fraction from Euphorbia kamerunica

1981 ◽  
Vol 20 (11) ◽  
pp. 2535-2537 ◽  
Author(s):  
Kio Abo ◽  
Fred J. Evans
Keyword(s):  
Diterpene Esters

Pentacyclic diterpene esters from Euphorbia aleppica

1995 ◽  
Vol 40 (4) ◽  
pp. 1219-1221 ◽  
Author(s):  
Yan-Ping Shi ◽  
Zhong-Jian Jia ◽  
Lahham Jamil ◽  
Saleh Sadiq
Keyword(s):  
Diterpene Esters
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