Benzofurans or Isochromenes via the Ring-Opening Cyclization of Cyclopropene Derivatives with Organolithiums
摘要:
A new and efficient approach to benzocycles from cyclopropene derivatives is described. Deprotection by organolithiums and subsequent ring-opening cyclization of the related 2-cyclopropenyl phenyl or benzyl acetates generated benzofurans and isochromenes in one pot.
Benzofurans or Isochromenes via the Ring-Opening Cyclization of Cyclopropene Derivatives with Organolithiums
摘要:
A new and efficient approach to benzocycles from cyclopropene derivatives is described. Deprotection by organolithiums and subsequent ring-opening cyclization of the related 2-cyclopropenyl phenyl or benzyl acetates generated benzofurans and isochromenes in one pot.
[EN] CERTAIN 5-ALKYL-2-ARYLAMINOPHENYLACETIC ACIDS AND DERIVATIVES<br/>[FR] CERTAINS ACIDES 5-ALKYL-2-ARYLAMINOPHENYLACETIQUES ET LEURS DERIVES
申请人:NOVARTIS AG
公开号:WO1999011605A1
公开(公告)日:1999-03-11
Disclosed are the compounds of formula (I), wherein R is methyl or ethyl; R1 is chloro or fluoro; R2 is hydrogen or fluoro; R3 is hydrogen, fluoro, chloro, methyl, ethyl, methoxy, ethoxy or hydroxy; R4 is hydrogen or fluoro; and R5 is chloro, fluoro, trifluoromethyl or methyl; pharmaceutically acceptable salts thereof; and pharmaceutically acceptable prodrug esters thereof; as selective COX-2 cyclooxygenase inhibitors.
Certain 5-alkyl-2-arylaminophenylacetic acids and derivatives
申请人:——
公开号:US20020183391A1
公开(公告)日:2002-12-05
Disclosed are the compounds of formula I
1
wherein R is methyl or ethyl; R
1
is chloro or fluoro; R
2
is hydrogen or fluoro; R
3
is hydrogen, fluoro, chloro, methyl, ethyl, methoxy, ethoxy or hydroxy; R
4
is hydrogen or fluoro; and R
5
is chloro, fluoro, trifluoromethyl or methyl; and pharmaceutically acceptable salts thereof, as selective COX-2 cyclooxygenase inhibitors; and pharmaceutically acceptable prodrug esters thereof.
Certain 5-alkyl-2arylaminophenylacetic acids and derivatives
申请人:——
公开号:US20020013369A1
公开(公告)日:2002-01-31
Disclosed are the compounds of formula I
1
wherein R is methyl or ethyl; R
1
is chloro or fluoro; R
2
is hydrogen or fluoro; R
3
is hydrogen, fluoro, chloro, methyl, ethyl, methoxy, ethoxy or hydroxy; R
4
is hydrogen or fluoro; and R
5
is chloro, fluoro, trifluoromethyl or methyl; and pharmaceutically acceptable salts thereof, as selective COX-2 cyclooxygenase inhibitors; and pharmaceutically acceptable prodrug esters thereof.