Patents Assigned to Leciva, A.S.
  • Publication number: 20050131055
    Abstract: A method of manufacturing an amorphous form of the hemi-calcium salt of (3R, 5R) 7-[3-phenyl-4-phenylcarbamoyl-2-(4-fluorophenyl)-5-isopropyl-pyrrol-1-yl]-3,5-dihydroxyheptanoic acid of formula (I), in which (3R, 5R) 7-[3-phenyl-4-phenylcarbamoyl-2-(4-fluorophenyl)-5-isopropyl-pyrrol-1-yl]-3,5-dihydroxyheptanoic acid or its salt with a cation M+ wherein M30 is either a cation of an alkali metal or an ammonium cation of formula RnN(+)H(4?n) wherein R is lower C1-C5 alkyl, n may reach values ranging between 0 and 3, is, without isolating the intermediate in the form of the hemi-calcium salt or of another salt, acid or lactone, converted, in a solution, by the treatment with the calcium salt or calcium hydroxide, or a calcium C1-C5 alcoholate, to the hemi-calcium salt, and the latter is precipitated with a C1-C5hydrocarbon or dialkylether of formula R1OR2, wherein each of R1 and R2 is a C1-C5 alkyl group.
    Type: Application
    Filed: January 30, 2003
    Publication date: June 16, 2005
    Applicant: LECIVA, A.S.
    Inventors: Stanislav Radl, Jan Stach
  • Publication number: 20050043360
    Abstract: A method for obtaining antidiabetic of formula (I), wherein the method comprises condensing of a 4-derivatized phenol or phenolate of general formula (II), wherein R is an amino group-containing organic residue, selected from the group comprising a residue of the following formula —NHR3, wherein R3 is hydrogen or a protecting group, which is removed before further treatment, and a residue of general formula (A), wherein Rb represents a carboxy group either in the free acid form or in the form of a salt or ester or another functional derivative or the nitrile group CN, and M represents a hydrogen or alkali metal atom, with a pyridine base of general formula (III, wherein Z is a leaving group other than a halogen, wherein, before or after carrying out the condensation, the following operations are carried out: (a) diazotizing the amino group present in organic residue R; (b) converting the diazotised residue R into a derivative of 2-halopropionate or 2-halopropionitrile of formula (B), wherein Rb is as defined
    Type: Application
    Filed: April 25, 2002
    Publication date: February 24, 2005
    Applicant: LECIVA, A.S.
    Inventors: Ales Halama, Ludmila Hejtmankova, Petr Lustig, Jindrich Richter, Lucie Srsnova, Josef Jirman
  • Patent number: 6303612
    Abstract: Processes for the preparation of derivatives of hydroxyphenylsulfanylbenzoic and hydroxyphenylsulfanylarylacetic acids of Formula (I) and pharmaceutical compositions including these compounds are provided: wherein X is H, halogen or NO2 group, n is 0 or 1, and m is 2 to 4 if Z is either 4-acetyl-3 -hydroxy-2-propylphenoxy of Formula (II): or a piperazinyl residue, or m is 1 if Z is quinolin-2-yl or 6-chloroquinoli-2-yl.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: October 16, 2001
    Assignee: Leciva, A.S.
    Inventors: Miroslav Kucha{haeck over (r)}, Vojt{haeck over (e)}ch Kmoní{haeck over (c)}ek, Vladimíra Panajotová, Bohumila Br{haeck over (u)}nová, Antonín Jandera, Hana Ji{haeck over (r)}í{haeck over (c)}ková, V{haeck over (e)}ra Bucharová