15. Acacic Acid
Nomenclature
CAS number: 1962-14-7
(3β,16α,21β)-Trihydroxyolean-12-en-28-oic acid. C30H48O5; mol wt 488.70.
C 73.73%, H 9.90%, O 16.37%.
Description and references
Isoln from pods of Acacia concinna D.C., Leguminosae: Varshney, Shamsuddin, Tetrahedron Lett. 1964, 2055; from bark of A. concinna D.C.: R. Banerji, S. K. Nigam, J. Indian Chem. Soc. 57, 1043 (1980). Structure and stereochemistry: Varshney et al., ibid. 1965, 1187. Revised structure: A. K. Barua et al., Trans. Bose Res. Inst. (Calcutta) 39, 61 (1976), C.A. 87, 53460c (1977).
Properties
Needles from methanol, mp 280-281°.Derivative
Methyl ester.C31H50O5; mol wt 502.73.
C 74.06%, H 10.02%, O 15.91%.
Properties
Needles from methanol, mp 223-224°.Derivative
Diacetyl lactone.C34H50O6; mol wt 554.76.
C 73.61%, H 9.08%, O 17.30%.