Global Patent Index - EP 1070061 A1

EP 1070061 A1 2001-01-24 - OXIDATION PROCESS USING PERIODIC ACID

Title (en)

OXIDATION PROCESS USING PERIODIC ACID

Title (de)

PERIODSÄURE VERWENDENDES OXIDATIONSVERFAHREN

Title (fr)

PROCEDE D'OXYDATION AU MOYEN D'ACIDE PERIODIQUE

Publication

EP 1070061 A1 (EN)

Application

EP 99915282 A

Priority

  • GB 9810179 A
  • US 9907468 W
  • US 8144698 P

Abstract (en)

[origin: WO9952899A1] The present invention relates to a periodic acid oxidation which converts the penultimate intermediate bearing a primary alcohol to the target endothelin antagonist compound of Formula (I) having a carboxylic acid.

IPC 1-7 (main, further and additional classification)

C07D 405/04

IPC 8 full level (invention and additional information)

C07D 405/04 (2006.01)

CPC (invention and additional information)

C07D 405/04 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU NL PT SE

EPO simple patent family

WO 9952899 A1 19991021; AU 3383399 A 19991101; CA 2327926 A1 19991021; EP 1070061 A1 20010124; EP 1070061 A4 20011107; JP 2002511464 A 20020416

INPADOC legal status


2002-12-18 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020618

2002-03-20 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020205

2001-11-07 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20010920

2001-11-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU NL PT SE

2001-11-07 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7C 07D 405/04 A, 7A 61K 31/44 B, 7A 61P 9/02 B

2001-01-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001109

2001-01-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU NL PT SE

2001-01-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL PAYMENT 20001109;LT PAYMENT 20001109;LV PAYMENT 20001109;MK PAYMENT 20001109;RO PAYMENT 20001109;SI PAYMENT 20001109