Chiral biotin precursors

Details Chiral biotin precursors Chiral biotin precursors

1988-11-30

1989-10-10

Schwartz, Richard A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548111, 548303, C07D49504, C07D491048

Patent

active

048733393

ABSTRACT:
Imidazole derivatives of the formula: ##STR1## wherein R.sub.1 is an (R)- or (S)-1-phenylalkyl group, an (R)- or (S)-1-alkoxycarbonyl-1-phenylmethyl group or an (R)- or (S)-1-aryloxycarbonyl-1-phenylmethyl group, R.sub.2 is hydrogen, a substituted or unsubstituted alkanoyl group, a substituted or unsubstituted benzoyl group, a substituted or unsubstituted benzyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxyalkyl group, a pyranyl group, a substituted or unsubstituted benzenesulfonyl group, an alkylsufonyl group, a diarylphosphinyl group, a dialkoxyphosphinyl group or a trialkylsilyl group, and A is a sulfur or oxygen atom. The imidazole derivatives are intermediate products for the production of (+) biotin.

REFERENCES:
patent: 2489232 (1949-11-01), Goldberg et al.
patent: 2489235 (1949-11-01), Goldberg et al.
patent: 4054740 (1977-10-01), Field
Tanaka et al., Chem. Pharm. Bull., vol. 32, No. 8, pp. 3291-3298.

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