Process for preparing esters of .alpha.-methyl-3,4-dihydroxyphen

Details Process for preparing esters of .alpha.-methyl-3,4-dihydroxyphen Process for preparing esters of .alpha.-methyl-3,4-dihydroxyphen

Filed on

1979-08-06

Date issued

1981-03-03

Examiner

Trousof, Natalie

Patent Class

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

SubClass

Organic compounds

SubSubClass

Carboxylic acid esters

Other Related Categories

2603264, 26032643, 2603405R, 546347, 560 40, C07C125065

Type

Patent

Status

active

Patent number

042542731

Description

ABSTRACT:
Improved process for preparing esters of .alpha.-methyl-3,4-dihydroxyphenylalanine having pharmaceutical activity via novel N-(tert-butoxycarbonyl) intermediates.

REFERENCES:
patent: 3829456 (1974-08-01), Berman
patent: 3839395 (1974-10-01), Otsuka et al.
patent: 3852338 (1974-12-01), Kaiser et al.
patent: 3859331 (1975-01-01), Kaiser et al.
patent: 3891696 (1975-06-01), Bodor et al.
patent: 3932375 (1975-01-01), Nagasawa et al.
patent: 4007173 (1977-02-01), Hoover et al.
Krail et al., Chem. Absts., 80, 83582(s), 1974.
Klieger, Liebigs Ann., 724, 204 (1969).
Broadbent et al., J. Chem. Soc., 2632 (1967).

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