This work discusses a rapid synthesis of substituted guanidines from 1,3-disubstituted thloureas using copper sulphate-silica gel in the presence of an amine. The method surpasses the previous known methods for the synthesis.
Injectable long-acting analgesic composition comprising an ester derivative of ketorolac
申请人:Wang Jhi-Joung
公开号:US20060183786A1
公开(公告)日:2006-08-17
Disclosed herein is an injectable long-acting analgesic composition comprising:
(a) a ketorolac ester derivative of formula (I),
wherein
R is a straight-chain or branched saturated or unsaturated C
1
-C
20
aliphatic group optionally substituted with a C
6
-C
10
aryl group; and (b) a pharmaceutically acceptable oil vehicle. The composition can provide a longer duration of action and, therefore, is suitable for use in the treatment of long-lasting pains and inflammations.
Synthesis and structure-activity relationships of N,N'-di-o-tolylguanidine analogs, high-affinity ligands for the haloperidol-sensitive .sigma. receptor
作者:Michael W. Scherz、Michelle Fialeix、James B. Fischer、N. Laxma Reddy、Alfred C. Server、Mark S. Sonders、Barbara C. Tester、Eckard Weber、Scott T. Wong、John F. W. Keana
DOI:10.1021/jm00171a016
日期:1990.9
2-CH3C6H5). Replacement of one or both aryl rings with certain saturated carbocycles (e.g. cyclohexyl, norbornyl, or adamantyl) leads to a significant increase in affinity. By combining the best aromatic and best saturated carbocyclic substituents in the same molecule, we arrived at some of the most potent sigma ligands described to date (e.g. N-exo-2-norbornyl-N'-(2-iodophenyl)guanidine, IC50 = 3 nM vs [3H]-3)
着眼于新型非典型抗精神病药的开发,我们研究了氟哌啶醇敏感的sigma受体的N,N'-二-邻甲苯基胍(DTG,3)及其同类物的结构亲和力关系。合成了许多DTG类似物,并在豚鼠脑膜匀浆的体外放射性配体置换实验中使用了高sigma特异性放射性配体[3H] -3和[3H]-(+)-3-(3-羟苯基)进行了评估。 -N-(1-丙基)哌啶和苯环利定(PCP)受体特异性化合物[3H] -N- [1-(2-噻吩基)-环己基]哌啶和[3H]-(+)-5-甲基-10 ,11-二氢-5H-二苯并[a,d]环庚烯-5,10-亚胺。N,N'-二芳基胍对sigma受体的亲和力随邻位取代基的体积比C2H5大而增加。疏水取代基通常优于类似位置的亲水取代基。此外,电子中性取代基优于强电子给体或吸电子基团。只要胍的至少一侧带有优选基团(例如2-CH 3 C 6 H 5),通常就可以保持与σ受体的显着结合。用某些饱和的碳环(例
SYNTHESIS OF ABIRATERONE AND RELATED COMPOUNDS
申请人:Crystal Pharma, S.A.U.
公开号:US20140011992A1
公开(公告)日:2014-01-09
The present invention relates to processes for obtaining abiraterone and derivatives thereof, such as abiraterone acetate, by means of a Suzuki coupling through a steroid borate of general formula (IV) or a C—C coupling through a steroid hydrazone of general formula (II), as well as to intermediates useful in said processes.
A facile high yielding process of guanidines is reported by reaction of amine nucleophiles on the oxidised thioureas in an aqueous medium using the unexploited reagents sodium chlorite and sodium metaperiodate for the oxidation of 1,3-disubstituted thioureas.
[EN] PROCESS FOR THE PREPARATION OF 1-[4-NITRO-2-(TRIFLUOROMETHYL)PHENYL]-ALKANONES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 1-[4-NITRO-2-(TRIFLUOROMÉTHYL)PHÉNYL]-ALCANONES
申请人:BASF AGRO BV
公开号:WO2021160468A1
公开(公告)日:2021-08-19
The present invention relates to a process for the preparation of 1-[4-nitro-2-(trifluoromethyl)- phenyl]-alkanones and substituted phenoxyphenyl ketones.