Sa. Attaurrahman,"abbas S",dureshahwar,"jamal et Mi. Choudhary, NEW WITHANOLIDES FROM WITHANIA SPP, Journal of natural products, 56(7), 1993, pp. 1000-1006
Two new wichanolides named coagulin 14,20-epoxide-1-oxo-(22R)-witha-3,
5,24-trienolide! 1! and withasomidienone 27-hydroxy-3-oxo-(22R)-with
a-1,4,24-trienolide! 2! have been isolated from Withania coagulance a
nd Withania somnifera, respectively. The structures have been determin
ed on the basis of spectroscopic studies.