8199. α-Ribazole

Nomenclature

CAS number: 132-13-8
5,6-Dimethyl-1-α-d-ribofuranosyl-1H-benzimidazole.
C14H18N2O4; mol wt 278.30.
C 60.42%, H 6.52%, N 10.07%, O 23.00%.

Description and references

Nucleoside moiety of vitamin B12, q.v. Isoln by acid hydrolysis of vitamin B12: N. G. Brink et al., J. Am. Chem. Soc. 72, 1866 (1950); N. G. Brink, K. Folkers, ibid. 74, 2856 (1952). Syntheses of α- and β-anomers: F. W. Holly et al., ibid. 4521; R. S. Wright et al., ibid. 80, 2004 (1958); J. D. Stevens et al., J. Org. Chem. 33, 1806 (1968). Biosynthetic study: J. H"orig, P. Renz, FEBS Lett. 80, 337 (1977). Spectroscopic characterization: K. L. Brown et al., Inorg. Chem. 23, 1463 (1984).

Chemical structure

Properties

Crystals from water, mp 198-199°. [α]D23 +14° (c = 0.9 in pyridine).