Process for the preparation of imidazothiazolone derivatives

Details Process for the preparation of imidazothiazolone derivatives Process for the preparation of imidazothiazolone derivatives

1992-05-15

1993-08-03

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

560 8, C07D51302

Patent

active

052330451

ABSTRACT:
The invention relates to a novel process for the preparation of imidazothiazolone derivatives of formula I, wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined in the claims, which are suitable for the preparation of D-(+)-biotin.

REFERENCES:
patent: 4732987 (1988-03-01), Poetsch et al.
patent: 4877882 (1989-10-01), Poetsch et al.
patent: 4937351 (1990-06-01), Poetsch et al.
English translation of example 1f of WO/85/02187. (1985).

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