作者:Lutz Greiner-Bechert、Thomas Sprang、Hans-Hartwig Otto
DOI:10.1007/s00706-004-0265-8
日期:2005.4
Heteroaryl substituted cyclopropyl ketones were prepared by reactions with Me 3SO+ I+, and by reaction with Lewis acids they were transformed into substituted dihydrobenzo[ b ]furanone or -thiophenone, or γ-hydroxy ketones. Cycloadditions with thiophene derivatives allowed the synthesis of substituted benzo[ b ]thiophene derivatives, but with poor yields. Structures and stereochemistry were established mainly
噻吩基和呋喃基丙烯酮与丙二酸酯,氰基乙酸酯和丙二腈反应,生成可环化为杂芳基取代的二氢吡喃,环己醇和哌啶酮的加成产物。杂芳基取代的环丙基酮是通过与 Me 3 SO + I +反应制备的 ,并且通过与 路易斯 酸反应,将 它们转化为取代的二氢苯并[ b ]呋喃酮或-噻吩酮或γ-羟基酮。与噻吩衍生物的环加成可以合成取代的苯并[ b ]噻吩衍生物,但收率很低。主要通过NMR光谱确定结构和立体化学。
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.
1,4-pentandien-3-ones, XXXII: Reaction of 2-acetylthiophene and 2-acetylfuran with malononitrile and aldehydes, and synthesis and properties of phenylene-bis [(thienyl/furyl)nicotinonitrile] derivative
作者:Lutz Greiner-Bechert、Hans-Hartwig Otto
DOI:10.1002/ardp.2503240908
日期:——
(1b) with aldehydes. The Michael adducts 5/6 are obtained from 3/4 by reaction with malononitrile/LDA in THF at −78°C, or in DMSO with NaH at room temp. Reaction of 3/4 with malononitrile and methylate in methanol yielded the substituted nicotinonitriles 7/8. From terephthalaldehyde, the diketones 9 are prepared, which yield with malononitrile the phenylene‐bis[(thienyl/furyl)nicotinonitrile] derivatives