Global Patent Index - EP 1854791 A8

EP 1854791 A8 20080227 - NOVEL THIOPHENE COMPOUND AND PROCESS FOR PRODUCING CAFFENOFURAN OR ANALOGUE THEREOF FROM THE SAME

Title (en)

NOVEL THIOPHENE COMPOUND AND PROCESS FOR PRODUCING CAFFENOFURAN OR ANALOGUE THEREOF FROM THE SAME

Title (de)

NEUE THIOPHENVERBINDUNG UND VERFAHREN ZUR HERSTELLUNG VON CAFFENOFURAN ODER EINEM ANALOGON DAVON AUS DIESER

Title (fr)

NOUVEAU COMPOSE THIOPHENE ET PROCEDE DE PRODUCTION DE CAFFENOFURANE OU DE SON ANALOGUE A PARTIR DE CELUI-CI

Publication

EP 1854791 A8 20080227 (EN)

Application

EP 06714262 A 20060222

Priority

  • JP 2006303122 W 20060222
  • JP 2005045014 A 20050222

Abstract (en)

[origin: EP1854791A1] The present invention provides a novel thiophene compound as a synthetic intermediate that is useful for efficient production of kahweofuran or an analogue thereof. The present invention also provides a process for producing kahweofuran or an analogue thereof using the novel thiophene compound as an intermediate material. Of novel thiophene compounds represented by Formula (1): wherein R 1 is a hydrogen atom or a C 1 -C 4 lower alkyl group; R 2 is a hydrogen atom or an alcohol-protecting group; R 3 is a hydrogen atom, -COR 4 or -C(OH)R 5 (wherein R 4 and R 5 each represent a C 1 -C 4 , lower alkyl group); provided that when R 2 and R 3 are hydrogen atoms, R 1 is not any of a hydrogen atom, methyl group, or n-propyl group; a thiophene compound represented by Formula (2) is reduced and cyclized in the presence of a transition metal catalyst to produce kahweofuran or kahweofuran analogue (3a) shown below: wherein R 1 is a hydrogen atom or a C 1 -C 4 lower alkyl group, and R 4 is a C 1 -C 4 lower alkyl group.

IPC 8 full level

C07D 333/16 (2006.01); A23L 27/14 (2016.01); A23L 27/20 (2016.01); A61K 8/49 (2006.01); A61Q 13/00 (2006.01); C07D 333/22 (2006.01); C07D 495/04 (2006.01); C11B 9/00 (2006.01)

CPC (source: EP)

C07D 333/18 (2013.01); C07D 333/22 (2013.01); C07D 409/06 (2013.01); C07D 409/12 (2013.01); C07D 495/04 (2013.01); C11B 9/0076 (2013.01); Y02P 20/55 (2015.11)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1854791 A1 20071114; EP 1854791 A4 20100127; EP 1854791 A8 20080227; EP 1854791 B1 20110713; CN 101128450 A 20080220; US 2008167481 A1 20080710; US 7897790 B2 20110301; WO 2006090716 A1 20060831

DOCDB simple family (application)

EP 06714262 A 20060222; CN 200680005671 A 20060222; JP 2006303122 W 20060222; US 88473706 A 20060222