The cobalt-catalyzed cross-coupling of organozinc bromides with N-cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS) is described. The same cobalt catalyst, cobalt(II) bromide, was used for both the synthesis of the organozinc species and the cross-coupling reaction. However in this case, a catalytic amount of zinc dust is necessary in the second step to release the low-valent cobalt. Under these mild
Substituted 3-aryl-5-aryl-[1,2,4]-oxadiazoles and analogs as activators of caspases and inducers of apoptosis and the use thereof
申请人:——
公开号:US20030045546A1
公开(公告)日:2003-03-06
The present invention is directed to substituted 3-aryl-5-aryl-[1,2,4]-oxadiazoles and analogs thereof, represented by the Formula I:
1
wherein Ar
1
, Ar
3
, A, B and D are defined herein. The present invention also relates to the discovery that compounds having Formula I are activators of caspases and inducers of apoptosis. Therefore, the activators of caspases and inducers of apoptosis of this invention may be used to induce cell death in a variety of clinical conditions in which uncontrolled growth and spread of abnormal cells occurs.
[EN] NOVEL HETEROCYCLIC COMPOUNDS AS ANTIMALARIAL AGENTS<br/>[FR] NOUVEAUX COMPOSÉS HÉTÉROCYCLIQUES UTILES EN TANT QU'AGENTS ANTIPALUDIQUES
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2015028989A1
公开(公告)日:2015-03-05
The invention relates to novel heterocyclic compounds of the Formula I. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more compounds of the Formula I and especially their use as medicaments to treat or prevent malaria infections or to treat or prevent other protozoal diseases like sleeping sickness, Chagas disease, amebiasis, giardiasis, trichomoniasis, toxoplasmosis, and leishmaniasis.
A facile and general synthesis of various N-substituted cyanamides was accomplished by the Tiemann rearrangement of amidoximes with benzenesulfonyl chlorides (TsCl or o-NsCl) and DIPEA.