Neuroleptic activity and dopamine-uptake inhibition in 1-piperazino-3-phenylindans
摘要:
A series of 1-piperazino-3-phenylindans was synthesized and tested for neuroleptic and thymoleptic activity. Neuroleptic activity was found only in trans racemates and was associated with one of the enantiomers only. The potent and long-acting neuroleptic compound trans-4-[3-(4-fluorophenyl)-6-(trifluoromethyl)indan-1-yl]-1-piperazineethanol (Lu 18-012, tefludazine) was developed by systematic variation of structural components. Thymoleptic activity was optimized, especially with respect to dopamine-uptake inhibition. No geometrical stereoselectivity was found with regard to dopamine-uptake inhibition, but a high enantioselectivity could be demonstrated for both cis and trans racemates. The most potent compounds were 1-piperazino-3-(3,4-dichlorophenyl)indans with IC50 values of about 2nM for inhibition of dopamine uptake.
Superacid-Catalyzed Reactions of Cinnamic Acids and the Role of Superelectrophiles<sup>1</sup>
作者:Rendy、Yun Zhang、Aaron McElrea、Alma Gomez、Douglas A. Klumpp
DOI:10.1021/jo030327t
日期:2004.4.1
formation of dicationic intermediates (superelectrophiles), and the reactions can lead to either chalcone-type products or indanone products. The directobservation of a dicationic species (by low-temperature 13C NMR) is reported. We provide clear evidence that protonated carboxylic acid groups (or the corresponding acyl cation) can enhance the reactivity of an adjacent electrophilic center. Triflic acid
已经研究了肉桂酸和相关化合物的化学性质。在超酸催化的芳烃反应中,提出了两种相互竞争的反应机理。两种机理都涉及形成阳离子型中间体(超亲电子试剂),并且这些反应可导致查尔酮类产物或茚满酮产物。据报道直接观察到一种特殊的物质(通过低温13 C NMR)。我们提供了明确的证据,表明质子化的羧酸基团(或相应的酰基阳离子)可以增强相邻亲电中心的反应活性。三氟甲磺酸还被发现是从肉桂酸直接合成某些缺电子的查耳酮和杂环查耳酮的有效酸催化剂。
BOGESO, K. P., J. MED. CHEM., 1983, 26, N 7, 935-947