Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Radical -xh acid – or anhydride – acid halide or salt thereof...
Patent
1989-05-03
1991-06-18
Shippen, Michael L.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Radical -xh acid, or anhydride, acid halide or salt thereof...
514533, 514534, 514539, 514544, 514546, 514567, 514646, 514647, 514679, 514685, 514716, 514721, 560 46, 560 53, 560 64, 560 65, 560 66, 560 70, 560 74, 560108, 560138, 560141, 562453, 562463, 562473, 562474, 562476, 564307, 564422, 564443, 568306, 568325, 568329, 568331, 568586, 568644, 568645, A61K 3119
Patent
active
050250361
ABSTRACT:
The invention relates to catechol carboxylic acid derivatives of the formula ##STR1## wherein, R.sub.1 is ##STR2## acetyl, hydrogen, hydroxy or alkanoyloxy, R.sub.2 is ##STR3## hydroxy, hydrogen or alkanoyloxy, wherein R is hydrogen, lower alkyl or --(CH.sub.2).sub.n --N--(lower alkyl).sub.2,
REFERENCES:
patent: 3987108 (1976-10-01), Karrer
patent: 4067892 (1978-01-01), Thorne
Derwent Abst. of Jap. Pat. 61-106,531A.
Derwent Abst. of Jap. Pat. 61-118,346A.
Derwent Abst. of Jap. Pat. 60-260,532A.
Derewnt Abst. of Jap. Pat. 61-106,545A.
Carson Matthew
Han Ru-Jen L.
Lemahieu Ronald A.
Gould George M.
Hoffmann-La Roche Inc.
Isgro William G.
Leon Bernard S.
Shippen Michael L.
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