Properties: Prisms from acetone + petr ether, mp 187-188°. [a]D25 +14.1° (c = 1.138 in chloroform). uv max: 217 nm (log e 4.22). LD50 i.v. in cats: 1 mg/kg (Chen, Henderson).
Melting point: mp 187-188°
Optical Rotation: [a]D25 +14.1° (c = 1.138 in chloroform)
Absorption maximum: uv max: 217 nm (log e 4.22)
Toxicity data: LD50 i.v. in cats: 1 mg/kg (Chen, Henderson)
Derivative Type: Acetate
Additional Names: Acetyltanghinigenin
Percent Composition: C 69.74%, H 7.96%, O 22.30%
Properties: Prisms from acetone + petr ether, mp 241-243°. [a]D24 +14.9° (c = 1.075 in chloroform).
Melting point: mp 241-243°
Optical Rotation: [a]D24 +14.9° (c = 1.075 in chloroform)
Derivative Type: 3-[(2-O-Acetyl-6-deoxy-3-O-methyl-a-L-glucopyranosyl)oxy]
CAS Registry Number: 25390-16-3
Additional Names: Tanghinin
Percent Composition: C 65.07%, H 7.85%, O 27.09%
Literature References: From the seed of Tanghinia madagascariensis Pet., Apocynaceae and Tanghinia venenifera Poir., Apocynaceae. Isoln: Arnaud, Compt. Rend.
108, 1255 (1889); Frèrejacque et al., ibid.
226, 268 (1948).
Properties: Leaflets from methanol + ether, mp 128-131°. [a]D21 -81.5° (c = 1.092 in methanol). LD50 i.v. in cats: 0.4 mg/kg (Chen, Henderson).
Melting point: mp 128-131°
Optical Rotation: [a]D21 -81.5° (c = 1.092 in methanol)
Toxicity data: LD50 i.v. in cats: 0.4 mg/kg (Chen, Henderson)
Status: This monograph has been retired and is no longer subject to revision or update.
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