Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.2047/CHE/2011 A
(19) INDIA
(22) Date of filing of Application :16/06/2011 (43) Publication Date : 21/06/2013
(54) Title of the invention : AN IMPROVED PROCESS FOR THE PREPARATION OF DESLORATADINE
(51) International classification :C07D
(31) Priority Document No :NA
(32) Priority Date :NA
(33) Name of priority country :NA
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(71)Name of Applicant :
1)ORCHID CHEMICALS & PHARMACEUTICALS
LTD
Address of Applicant :ORCHID TOWERS, 313,
VALLUVAR KOTTAM HIGH ROAD, NUNGAMBAKKAM,
CHENNAI - 600 034 Tamil Nadu India
(72)Name of Inventor :
1)REGURI BUCHI REDDY
2)UPPARAPALLI SAMPATH KUMAR
3)ANAND SIVADAS
4)SUGIRDHA SAMPATH
5)SABARINATHAN NATARAJAN
6)NOOR MOHAMED ABDULMALIK
(57) Abstract :
The present invention relates to an improved process for the preparation of mixture of crystalline form of desloratadine form I and
II of formula (1) having 90-98 % of form I and 2-10 % of form II using methylisobutylketone.
No. of Pages : 11 No. of Claims : 4
The Patent Office Journal 21/06/2013 13986