Title: a1-Sitosterol
CAS Registry Number: 474-40-8
CAS Name: (3b,4a,5a,24Z)-4-Methylstigmasta-7,24(28)-dien-3-ol
Additional Names: citrostadienol
Molecular Formula: C30H50O
Molecular Weight: 426.72
Percent Composition: C 84.44%, H 11.81%, O 3.75%
Literature References: Occurs in plants. Isoln from wheat germ oil: Anderson et al., J. Am. Chem. Soc. 48, 2987 (1926); Wallis, Fernholz, ibid. 58, 2446 (1936). Structure: Bernstein, Wallis, ibid. 61, 2308 (1939); Mazur, Sondheimer, ibid. 80, 6293, 6296 (1958). Identity with citrostadienol: Schreiber, Osske, Experientia 19, 69 (1963); eidem, Tetrahedron 20, 2575 (1964). Stereochemistry: C. Brooks et al., Steroids 20, 487 (1972).
Properties: Needles from alcohol, mp 164-166°. [a]D28 -1.7° (c = 2 in chloroform). Is pptd by digitonin.
Melting point: mp 164-166°
Optical Rotation: [a]D28 -1.7° (c = 2 in chloroform) |