Acetone Extract Of Roots Research Articles

Parryin, a diterpene with a tricyclic 6-7-5-ring system from Salvia parryi

Parryin and six other pimarane-type diterpenes were isolated from the acetone extract of roots of Salvia parryi. Parryin represents the first example of a biogenetically new type of tricyclic 6-7-5-ring diterpenes. Isopimara-6,8(14),15-triene, isopimara-8(14),15-dien-7-one and isopimara-8,15-dien-7-one have been isolated from a natural source for the first time. The structures were determined by spectroscopic studies.

New Diterpenoids fromEuphorbia sieboldiana

From the acetone extract of roots of EUPHORBIA SIEBOLDIANA, three known diterpenes, ENT-atisane-3beta,16alpha,17-triol ( 1), ingenol ( 4), and helioscopinolide A ( 5) as well as two new diterpenes, 3beta- O-acetyl- ENT-atisane-16alpha,17-diol ( 2), and ingenol-20-palmitate ( 3) were isolated. Their structures were elucidated by spectroscopic methods and chemical transformations.

Two diterpenes from Euphorbia sieboldiana

Abstract From the acetone extract of roots of Euphorbia sieboldiana, two new diterpenes have been isolated and their structures determined as ent-13R-hydroxy-atis-16-en-3,14-dione and ent-13,3β-dihydroxy-14-oxo-atis-16-ene on the basis of chemical and spectral evidence together with X-ray diffraction studies.