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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) Application No.: 1200/MUM/2004 A
(22) Date of filing of Application: 08/11/2004 (43) Publication Date: 09/06/2006
(54) Title of the invention: PROCESS FOR THE SYNTHESIS OF SULPHNYL DERIVATIVES
FROM CORRESPONDING CO-DERIVATIVES
(51) International classification : C07D 401/12
(31) Priority Document No : NIL
(32) Priority Date : NIL
(33) Name of priority country : NIL
(86) International Application No : NIL
and Filing Date : NIL
(87) International Publication No : NIL
(61) Patent of addition to :
Application No
NIL
(62)
Filed on : N.A.
Divisional to Application No : NIL
Filed on : N.A.
(57) Abstract:
(71) Name of Applicant:
DISHMAN PHARMACEUTICALS &
CHEMICALS LTD.
Address of the Applicant:
BHADR-RAJ CHAMBERS, SWASTIK
CROSS ROADS, NAVRANGPURA,
AHMEDABAD-380 009, GUJARAT,
INDIA.
(72) Name of the Inventor:
1. VYAS JANMEJAY RAJNIKANT
2. YADAV KASA MALIK
3. BHATT MAHUMADHUSAIN
GULAMHUSAIN
4. VYAS BHAVESH
RAMESHCHANDRA
Filed U/S 5(2) before The Patents
(Amendment) Act, 2005: NO
The present invention relates to an improved process for the preparation of substituted 2-(2-pyridylmethyl)
sulphinyl-1-h-benzimidazoles compounds of formula (I) and pharmaceutically acceptable salts thereof from the
corresponding substituted 2-(2-pyridylmethylthio)-1-H-benzimidazoles compounds of formula (II) in high purity
using the non-hazardous hypochlorites in presence of phase transfer catalyst.
Drawing Sheets: NIL
Total Pages: 45.
Fig. Nil
The Patent Office Journal 09/06/2006 10885