摘要:
This invention relates to bicyclic catechol derivatives having the general formulae I and II ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and Z represent various substituents, to a preparation process of the same comprising reacting a compound of formula III ##STR2## wherein R.sub.1 and R.sub.2 have the meanings given above with an appropriately substituted propionic or butyric acid (or an ester or a salt of the same) of formula IV ##STR3## wherein R.sub.3 has the meaning given above, and to therapeutical compositions wherein the active ingredient is one of these compounds.
摘要:
A subject matter of the present invention is novel intermediates for the synthesis of (R)-tamsulosin and of its pharmaceutically acceptable salts, and also the associated preparation process.
摘要:
The invention relates to new reticulated statistic acrylic copolymers that may be used in a very wide range of solvents (water, methylene chloride, chloroform, methanol, ethanol, dimethylformamide, pyridine,) stable between pH 1 and pH 14, to preparation process thereof and to their use in ion exchange chromatography.
摘要:
A subject matter of the present invention is novel intermediates for the synthesis of (R)-tamsulosin and of its pharmaceutically acceptable salts, and also the associated preparation process.
摘要:
This invention relates to solid phase peptide synthesis.Solid phase peptide synthesis is accomplished on polyacrylic resins (such as those described in EP 0 079 812 and EP 0 081 408 which correspond to U.S. Pat. Nos. 4,436,874 and 4,439,545 respectively) by a method which includes in the coupling protocol steps of washing the resin in water and/or aqueous solution(s).
摘要:
This invention relates to catechol derivatives having the general formula ##STR1## wherein R represents various substituents, to a process for the preparation of the same comprising reacting S-(3,4-dihydroxyphenyl)-isothiourea, which has the formula II, with a tosylate of the general formula III ##STR2## and to therapeutical compositions wherein the active ingredient is one of these compounds.