Antimalarial activity of new ethers and thioethers of dihydroartemisinin
摘要:
Various ethers and thioethers of dihydroartemisinin were prepared by treating dihydroartemisinin with hydroxy alkyl, substituted phenol, hydroxy aralkyl, hydroxy alkynyl and hydroxy heteroalkyl or thiols in the presence of BF(3)Et(2)O. The thioethers 64 and 65 were further oxidised to the respective sulfoxides. These derivatives were tested in the Plasmodium berghei K-173-infected mice and some active compounds were tested in chloroquine-resistant P yoelii nigeriensis (NS)-infected mice. Initially the compounds were administered subcutaneously and subsequently by the oral route. The antimalarial activity of the compounds 22, 23, 36, 66 and 79 were found to be comparable to that of arteether when tested in the K-173-infected mice. These compounds also showed activity in the P y nigeriensis (NS)-infected mice.
Prodrugs of a 3-(pyrrol-2-ylmethylidene)-2-indolinone derivatives
申请人:Sugen. Inc.
公开号:US20030100555A1
公开(公告)日:2003-05-29
The present invention relates to pyrrole substituted 2-indolinone compounds and their pharmaceutically acceptable salts which modulate the activity of protein kinases and therefore are expected to be useful in the prevention and treatment of protein kinase related cellular disorders such as cancer.
[EN] PRODRUGS OF 3-(PYRROL-2-YLMETHYLIDENE)-2-INDOLINONE DERIVATIVES<br/>[FR] PROMEDICAMENTS A BASE DE DERIVES 3-(PYRROL-2-YLMETHYLIDENE)-2-INDOLINONE
申请人:SUGEN INC
公开号:WO2002081466A1
公开(公告)日:2002-10-17
The present invention relates to pyrrole substituted 2-indolinone compounds and their pharmaceutically acceptable salts which modulate the activity of protein kinases and therefore are expected to be useful in the prevention and treatment of protein kinase related cellular disorders such as cancer.
Antimalarial activity of new ethers and thioethers of dihydroartemisinin
Various ethers and thioethers of dihydroartemisinin were prepared by treating dihydroartemisinin with hydroxy alkyl, substituted phenol, hydroxy aralkyl, hydroxy alkynyl and hydroxy heteroalkyl or thiols in the presence of BF(3)Et(2)O. The thioethers 64 and 65 were further oxidised to the respective sulfoxides. These derivatives were tested in the Plasmodium berghei K-173-infected mice and some active compounds were tested in chloroquine-resistant P yoelii nigeriensis (NS)-infected mice. Initially the compounds were administered subcutaneously and subsequently by the oral route. The antimalarial activity of the compounds 22, 23, 36, 66 and 79 were found to be comparable to that of arteether when tested in the K-173-infected mice. These compounds also showed activity in the P y nigeriensis (NS)-infected mice.