[EN] HEPATITIS C VIRUS INHIBITORS<br/>[FR] INHIBITEURS DU VIRUS DE L'HEPATITE C
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2003099274A1
公开(公告)日:2003-12-04
Hepatitis C virus inhibitors are disclosed having the general formula:(I) wherein R1, R2, R3, R', B, Y and X are described in the description. Compositions comprising the compounds and methods for using the compounds toinhibit HCV are also disclosed.
Macrocyclic peptides are disclosed having the general formula:
wherein R′, R
3
, R
3′
, R
4
, R
6
, X, Q, and W are described. Compositions comprising the compounds and methods for using the compounds to inhibit HCV are also disclosed.
Nitrogen bridgehead compounds. Part<b>65</b>. Vilsmeier-haack formylation of 4<i>H</i>-pyrido[1,2-<i>a</i>]pyrimidin-4-ones. Part<b>6</b>
作者:ÁGnes Horváth、István Hermecz
DOI:10.1002/jhet.5570230507
日期:1986.9
2-Substituted 3-formyl-4H-pyrido[1,2-a]pyrimidin-4-ones can be synthethized by Vilsmeier-Haack formylation with the dimethylformamide-phosphoryl chloride complex only from those 4H-pyrido[1,2-a]pyrimidin-4-ones which contain a substituent with electron-releasing resonance effect in position 2. The products were characterized by uv, ir and 1H nmr spectroscopy.
2-取代的3-甲酰基-4- ħ -吡啶并[1,2-一个]嘧啶-4-酮可以通过维尔斯迈尔-哈克甲酰化与二甲基甲酰胺,磷酰氯只对4络合物synthethized ħ -吡啶并[1,2- a ]嘧啶-4-酮,其在2位含有具有电子释放共振效应的取代基。产物通过uv,ir和1 H nmr光谱表征。
Metal free C-3 chalcogenation (sulfenylation and selenylation) of 4<i>H</i>-pyrido[1,2-<i>a</i>]pyrimidin-4-ones
作者:Prasanjit Ghosh、Gautam Chhetri、Sajal Das
DOI:10.1039/d1ra00834j
日期:——
An expeditious metal free C-3 chalcogenation of 4H-pyrido[1,2-a]pyrimidin-4-one has been devised to synthesize diversely orchestrated 3-ArS/ArSe derivatives in high yields (up to 95%). This operationally simple reaction proceeds under mild reaction conditions, can be executed in gram scale, and also highlights broad functional group tolerance. Preliminary experimental investigation suggests a radical
设计了 4 H -pyrido[1,2- a ]pyrimidin-4-one 的快速无金属 C-3 硫属化反应,以高产率(高达 95%)合成多种精心设计的 3-ArS/ArSe 衍生物。这种操作简单的反应在温和的反应条件下进行,可以以克级进行,并且还突出了广泛的官能团耐受性。初步实验研究表明了这些转变的根本机制途径。
Practical synthesis of 4H-pyrido[1, 2-a]pyrimidin-4-ones using ethylene glycol as a promoting solvent
作者:Mustafa Hussain、Jianhui Liu
DOI:10.1016/j.tetlet.2020.152269
日期:2020.9
A simple and useful protocol leading to different 4H-pyrido[1, 2-a] pyrimidin-4-ones have been established by cyclization of various 2-amino pyridines with β-oxo ester or alkynoate. The use of ethylene glycol was demonstrated to facilitate this condensation. This reaction proceeds by nontoxic, cheap, environment friendliness and biodegradable solvent at the normal green atmospheric condition in the