Allocryptopine
Title: Allocryptopine
CAS Registry Number: 485-91-6
CAS Name: 5,7,8,15-Tetrahydro-3,4-dimethoxy-6-methylbenzo[e][1,3]dioxolo[4,5-k][3]benzazecin-14(6H)-one
Molecular Formula: C21H23NO5
Molecular Weight: 369.41
Percent Composition: C 68.28%, H 6.28%, N 3.79%, O 21.66%
Literature References: Isomeric with cryptopine, q.v. Obtained from Chelidonium majus L., Bocconia cordata Willd., Sanguinaria canadensis L. and allied Papaveraceae: Manske in Manske, Holmes, The Alkaloids vol. IV (Academic Press, New York, 1954) p 159. Structure: Gadamer, Arch. Pharm. 257, 298 (1919). Exists in two isomeric modifications designated as a- and b-forms. Identity of a-form with a-fagarine: Redemann et al., J. Am. Chem. Soc. 71, 1030 (1949). Synthesis: Haworth, Perkin, J. Chem. Soc. 1926, 445; Bentley, Murray, ibid. 1963, 2497.
 
Derivative Type: a-Allocryptopine
Additional Names: a-Fagarine
Properties: Crystals from ethanol, mp 160-161°. Soluble in alcohol, chloroform, ether, ethyl acetate and dil acids.
Melting point: mp 160-161°
 
Derivative Type: b-Allocryptopine
Properties: Crystallizes with ½ mol of alcohol or ethyl acetate. Melts after expelling the solvent, at 169-171°.
Melting point: Melts after expelling the solvent, at 169-171°

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