Process for preparing biotin

Details Process for preparing biotin Process for preparing biotin

1981-10-08

1985-08-27

Schwartz, Richard A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D49504

Patent

active

045379734

ABSTRACT:
A process for preparing biotin, characterized in that a compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each hydrogen or benzyl and R.sup.3 is hydrogen or carboxyl, with the proviso that R.sup.1 and R.sup.2 are not simultaneously hydrogen, or a mixture of two or more different compounds of the formula [I] is heated in the presence of an alkanesulfonic acid.

REFERENCES:
patent: 3740416 (1973-06-01), Gerecke et al.
McOmie, J., (Editor), Protective Groups in Organic Chemistry, Plenum Press, New York, 1973, pp. 196-198.
Kolasa, T., et al., Tetrahedron, 30, 3591-3595, (1974).
Yajima, H., et al., Chem. Pharm. Bull. Japan, 23(5), 1164-1166, (1975).
Yajima, H. et al., J.C.S. Chem. Comm., 1974, pp. 107-108.
Bodanszky, M., et al., Peptide Synthesis, 2nd Ed., Wiley-Interscience, New York, 1976, pp. 44-45.

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