Enantioselective Synthesis Of Brivaracetam And Intermediates Thereof

Abstract: The present invention relates to an improved and economical process for enantioselective synthesis and purification of a novel key intermediate of Brivaracetam. Further, the present invention also relates to a process for the preparation of a chirally pure Brivaracetam of formula I utilizing the said intermediate.

Patent Information

Application #

Filing Date

17 January 2019

Publication Number

30/2020

Publication Type

INA

Invention Field

CHEMICAL

Status

Email

kolkatapatent@Lsdavar.in

Parent Application

Patent Number

Legal Status

Grant Date

2023-10-09

Renewal Date

Applicants

Clininvent Research Pvt. Ltd.

Block BN, Plot -7, Salt Lake, Sector-V, West Bengal, Kolkata-700091, India

Inventors

1. Sarabindu Roy

Sreekanan Pally, Batanagar, 24-Parganas (South), West Bengal 700140, India

2. Angshuman Ghosh

570/483, Ward No 12 Raghunathpur. Jhargram Pin: 721507 West Bengal, India

3. Ramesh Dhondi Kubeer

House No. 3-1-14/6 Saidabad Colony, New Bus stand, ARMOOR, Nizamabad, Telangana-503224, India

4. Mutyala V. V. Vara Prasad

S/O-Lakshamana Rao, 3-114 Pedapatnam Lanka, Near Kanaka Durga Temple, Mamidikuduru Mandal, Andhra Pradesh 533247,India

5. Gopal Paul

Vill-Chopra Jhar, PO-Islampur , Dist-Uttar Dinajpur, West Bengal 733202, India

6. Abhishek Garai

Vill-Changsole, PO-PINGBONI, Dist-PASCHIM MEDINIPUR, West Bengal 721128, India

7. Sourav Chakraborty

Vill-Garpratap Nagar, PO-GHATAL, Dist- PASCHIM MEDINIPUR, West Bengal 721212, India

8. Animesh Haldar

23 Sukanta Sarani, South Roy Nagar, Bansdroni, Kolkata Pin-700070,West Bengal, India

9. Ajay Kumar Yadaw

BA-22, U-3, Block B OM MOY Housing complex Prafulla Kanan (W) Kolkata 700101, India

10. Subho Roy

ADRIKA APARTMENT #1, Premises # 1151/2, 18/2 KALIKAPUR ROAD, Kolkata-700099, West Bengal, India

Specification

DESC:PLEASE SEE THE ATTACHMENT ,CLAIMS:PLEASE SEE THE ATTACHMENT

Documents

Application Documents

#	Name	Date
1	201931002041-STATEMENT OF UNDERTAKING (FORM 3) [17-01-2019(online)].pdf	2019-01-17
2	201931002041-PROVISIONAL SPECIFICATION [17-01-2019(online)].pdf	2019-01-17
3	201931002041-FORM 1 [17-01-2019(online)].pdf	2019-01-17
4	201931002041-Proof of Right (MANDATORY) [11-03-2019(online)].pdf	2019-03-11
5	201931002041-FORM-26 [01-04-2019(online)].pdf	2019-04-01
6	201931002041-DRAWING [16-01-2020(online)].pdf	2020-01-16
7	201931002041-CORRESPONDENCE-OTHERS [16-01-2020(online)].pdf	2020-01-16
8	201931002041-COMPLETE SPECIFICATION [16-01-2020(online)].pdf	2020-01-16
9	201931002041-Request Letter-Correspondence [13-02-2020(online)].pdf	2020-02-13
10	201931002041-Form 1 (Submitted on date of filing) [13-02-2020(online)].pdf	2020-02-13
11	201931002041-CERTIFIED COPIES TRANSMISSION TO IB [13-02-2020(online)].pdf	2020-02-13
12	201931002041-FORM 3 [09-07-2020(online)].pdf	2020-07-09
13	201931002041-FORM 18 [19-06-2021(online)].pdf	2021-06-19
14	201931002041-FER.pdf	2021-10-18
15	201931002041-FORM 3 [16-11-2021(online)].pdf	2021-11-16
16	201931002041-FER_SER_REPLY [16-11-2021(online)].pdf	2021-11-16
17	201931002041-ENDORSEMENT BY INVENTORS [16-11-2021(online)].pdf	2021-11-16
18	201931002041-CLAIMS [16-11-2021(online)].pdf	2021-11-16
19	201931002041-Annexure [16-11-2021(online)].pdf	2021-11-16
20	201931002041-US(14)-HearingNotice-(HearingDate-23-08-2023).pdf	2023-08-02
21	201931002041-FORM-26 [21-08-2023(online)].pdf	2023-08-21
22	201931002041-Correspondence to notify the Controller [21-08-2023(online)].pdf	2023-08-21
23	201931002041-Written submissions and relevant documents [05-09-2023(online)].pdf	2023-09-05
24	201931002041-Response to office action [05-09-2023(online)].pdf	2023-09-05
25	201931002041-PETITION UNDER RULE 137 [05-09-2023(online)].pdf	2023-09-05
26	201931002041-ENDORSEMENT BY INVENTORS [05-09-2023(online)].pdf	2023-09-05
27	201931002041-PatentCertificate09-10-2023.pdf	2023-10-09
28	201931002041-IntimationOfGrant09-10-2023.pdf	2023-10-09

Search Strategy

1	SearchStrategyE_25-06-2021.pdf