Intermediates for the preparation of antihistaminic 4-diphenylmethyl/diphenylmethoxy piperidine derivatives
申请人:Aventisub II Inc.
公开号:EP2261208A1
公开(公告)日:2010-12-15
The present invention is related to novel intermediates and processes which are useful in the preparation of certain antihistaminic piperidine derivatives of formula (I) wherein W represents -C(=O)- or -CH(OH)-; R1 represents hydrogen or hydroxy; R2 represents hydrogen; R1 and R2 taken together form a second bond between the carbon atoms bearing R1 and R2; n is an integer of from 1 to 5; m is an integer 0 or 1; R3 is -COOH or -COOalkyl wherein the alkyl moiety has from 1 to 6 carbon atoms and is straight or branched; each of A is hydrogen or hydroxy; and pharmaceutically acceptable salts and individual optical isomers thereof, with the proviso that where R1 and R2 are taken together to form a second bond between the carbon atoms bearing R1 and R2 or where R1 represented hydroxy, m is an integer 0.
Process for the preparation of antihistaminic 4-diphenylmethyl piperidine derivatives
申请人:Aventis Inc.
公开号:EP1953142A1
公开(公告)日:2008-08-06
The present invention is related to novel intermediates and processes which are useful in the preparation of certain antihistaminic piperidine derivatives of formula (I) wherein W represents -C(=O)- or -CH(OH)-; R1 represents hydrogen or hydroxy; R2 represents hydrogen; R1 and R2 taken together form a second bond between the carbon atoms bearing R1 and R2; n is an integer of from 1 to 5; m is an integer 0 or 1; R3 is -COOH or -COOalkyl wherein the alkyl moiety has from 1 to 6 carbon atoms and is straight or branched; each of A is hydrogen or hydroxy; and pharmaceutically acceptable salts and individual optical isomers thereof, with the proviso that where R1 and R2 are taken together to form a second bond between the carbon atoms bearing R1 and R2 or where R1 represented hydroxy, m is an integer 0.
Novel intermediates useful for the preparation of antihistaminic piperidine derivatives
申请人:Merrell Pharmaceuticals Inc.
公开号:US20010018521A1
公开(公告)日:2001-08-30
The present invention is related to a novel intermediates and processes which are useful in the preparation of certain antihistaminic piperidine derivatives of the formula
1
wherein
W represents —C(═O)— or —CH(OH)—;
R
1
represents hydrogen or hydroxy;
R
2
represents hydrogen;
R
1
and R
2
taken together form a second bond between the carbon atoms bearing R
1
and R
2
;
n is an integer of from 1 to 5;
m is an integer 0 or 1;
R
3
is —COOH or —COOalkyl wherein the alkyl moiety has from 1 to 6 carbon atoms and is straight or branched each of A is hydrogen or hydroxy; and
pharmaceutically acceptable salts and individual optical isomers thereof, with the proviso that where R
1
and R
2
are ta′ to form a second bond between the carbon and R
1
and R
2
or where R
1
represented hydroxy integer 0.