Crystalline upsilon-form bestatin and processes for its preparat

Details Crystalline upsilon-form bestatin and processes for its preparat Crystalline upsilon-form bestatin and processes for its preparat

1987-07-13

1988-11-22

Reamer, James H.

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

Organic compounds

Carboxylic acids and salts thereof

C07C10130

Patent

active

047867540

ABSTRACT:
A stable, non-hygroscopic, crystalline .gamma.-form of bestatin is prepared from the .alpha.- or .beta.-form of bestatin by heating at a temperature of from about 148.degree. C. to the melting point of bestatin, or by suspending or kneading in certan specified solvents.

REFERENCES:
patent: 4052449 (1977-10-01), Umezawa et al.
patent: 4189604 (1980-02-01), Umezawa et al.
patent: 4281180 (1981-07-01), Umezawa et al.

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