21-Dehydro Fluocortolone 、 2-氯乙醇 在
crude product 、 silica gel 作用下,
以of the 2-chloroethyl ester of 6α-fluoro-11β-hydroxy-3,20-dioxo-16α-methyl-1,4-pregnadien-21-oic acid is obtained的产率得到
Soft tertiary amine esters of bio-affecting carboxylic acids, processes for preparing and a pharmaceutical composition containing the same
申请人:Merck & Co., Inc.
公开号:EP0051278A1
公开(公告)日:1982-05-12
Derivatives of known bio-affecting carboxylic acids, their non-toxic pharmaceutically acceptable acid addition salts and N-oxides as well as processes for preparing those novel derivatives are disclosed. Those derivatives having the
wherein R-COO- is the acyloxy residue of a bio-affecting monocarboxylic acid; Y and Y' are each hydrogen or alkyl; n is zero or one; R1 and R2 are each inter alia alkyl, alkenyl, aryl, cycloalkyl, cycloalkenyl, aralkyl or alkaryl; and R3 is inter alia hydrogen; orthe structural formula
wherein -OOC-R'-COO- is the di(acyloxy) residue of a bio-affecting dicarboxylic acid.
Pyridylmethyl esters of selected bio-affecting carboxylic acids, process for preparing and pharmaceutical composition comprising the same
申请人:Merck & Co., Inc.
公开号:EP0055870A1
公开(公告)日:1982-07-14
Novel pharmaceutically useful derivatives of selected known bio-affecting carboxylic acids and a process for preparing them are disclosed, said derivatives having the structural formula
wherein R,, R2, X and X' are e.g. hydrogen, or C1-C5 alkyl; and R-COO- is the acyloxy residue of:
(a) a monocarboxylic acid, e.g. indomethacin;
(b) a steroidal monocarboxylic acid;
(c) a cephalosporin antibiotic having one carboxylic acid function;
(d) a penicillin antibiotic having one carboxylic acid function; or
(e) y-aminobutyric acid, captopril or valproic acid; or having the structural formula
wherein -OOC-R'-COO- is the di(acyloxy) residue of:
(a) A cephalosporin antibiotic having two carboxylic acid functions;
(b) a penicillin antibiotic having two carboxylic acid functions; or
(c) the dicarboxylic acid, methotrexate.
Non-toxic pharmaceutically acceptable acid addition salts, N-oxides and quaternary ammonium salts of the compounds of formulas (I) and (II) are also disclosed.
The invention relates to the combined administration of a PDE4 or PDE3/4 inhibitor and a disease modifying anti-rheumatic drug (DMARDs) or anti-rheumatic or anti-arthritic drug.