3-O- (2E ,4Z-decadienoyl) -20-O-acetylingenol

3-O- (2'E ,4'Z-Decadienoyl) -20-O-acetylingenol (compound 6) is a diterpene that can be isolated from Euphorbia kansui. 3-O- (2'E ,4'Z-Decadienoyl) -20-O-acetylingenol shows cleavage inhibition activity of individual Xenopus cells at the blastular stage.