C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/311.1, 260/2
C07D 413/10 (2006.01) C07D 263/56 (2006.01) C07D 263/57 (2006.01)
Patent
CA 1125768
ABSTRACT The invention is concerned with compounds of the general formula Image I , wherein R represents a hydrogen atom or an alkyl sroup containing 1 to 4 carbon atoms in the 5- or 6-position and R and R independently of one another represent a hydrogen atom, an alkyl group containing 1 to 4 carbon atoms or a group of the formula -(XO)n-H, in which X represents an ethylene group which is optionally substituted by methyl or ethyl and which contains 2 to 4 carbon atoms and n stands for an lnteger of 1 to 10, at least one of the symbols R1 and R2 being different from a hydrogen atom, or R1 and R2 together with the nitrogen atom to whlch they sre attached form a 5- to 7-membered saturated ring which, if desired, can contain a further hetero atom, and salts of these compounds, a process for their manu- facture, cosmetic preparations containing such compounds and salts as UV-A filters, as well as the use of such compounds, salts and cosmetic preparations.
336579
Gowling Lafleur Henderson Llp
Hoffmann-La Roche Limited
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