Properties: Prisms from pyridine + water, mp 266-270°; stout needles from methanol + ether, mp 206-208°. [a]D20 -27° (c = 1.075 in pyridine); [a]D19 -1.4° (c = 0.85 in methanol). uv max: 217 nm (log e 4.23). Sol in pyridine, hot methyl Cellosolve; sparingly sol in water. Practically insol in ether, chloroform, acetone.
Melting point: mp 266-270°; mp 206-208°
Optical Rotation: [a]D20 -27° (c = 1.075 in pyridine); [a]D19 -1.4° (c = 0.85 in methanol)
Absorption maximum: uv max: 217 nm (log e 4.23)
Derivative Type: Uzarigenin
CAS Registry Number: 466-09-1
CAS Name: (3b,5a)-3,14-Dihydroxycard-20(22)-enolide
Additional Names: odorigenin
Percent Composition: C 73.76%, H 9.15%, O 17.09%
Literature References: Synthesis: Stache et al., Ann.
726, 136 (1969); Kamano et al., J. Org. Chem.
39, 2319 (1974); eidem, J. Chem. Soc. Perkin Trans. 1
1975, 1972.
Properties: Crystals from methanol, mp 240-256°. [a]D20 +10.5° (c = 1.056 in alc).
Melting point: mp 240-256°
Optical Rotation: [a]D20 +10.5° (c = 1.056 in alc)
Derivative Type: 3-O-Acetyluzarigenin
Percent Composition: C 72.08%, H 8.71%, O 19.20%
Properties: Hexagonal plates from methanol, mp 262-266°. [a]D22 +4.6° (c = 1.09 in chloroform).
Melting point: mp 262-266°
Optical Rotation: [a]D22 +4.6° (c = 1.09 in chloroform)
Therap-Cat: Antidiarrheal.
Keywords: Antidiarrheal.
产品链接: 20231-81-6››