新型铅噻唑氨基胍对革兰氏阳性菌表现出很强的活性。这些物质的潜在目标是十一异戊二烯二磷酸合酶(UPPS)和十一异戊二烯二磷酸磷酸酶(UPPPP)。在这里,我们报道了噻唑氨基胍类似物库的合成和抗菌评价,其中可旋转键插入噻唑的C2位和疏水基团之间。分子灵活性增加,产生了对MRSA和大肠杆菌具有强活性的新类似物。最好的化合物4i显示出快速杀菌和低诱导细菌耐药性的倾向。化合物4i对EcUPPS酶的IC 50为145 μmol L -1 (58 μg mL -1 )。化合物4i还可以抑制和破坏细菌生物膜。这些噻唑氨基胍可以开发为未来潜在的治疗候选物。
Synthesis of 1,3-Thiazolidin-4-Ones; Reactivity of the Thiosemicarbazone Function towards Dimethyl Acetylenedicarboxylate
作者:Alaa A. Hassan、Shaaban K. Mohamed、Nasr K. Mohamed、Kamal M. El-Shaieb、Ahmed T. Abdel-Aziz、Joel T. Mague、Mehmet Akkurt
DOI:10.3184/174751916x14552868764580
日期:2016.3
Aryl thiosemicarbazones react rapidly in a facile procedure with dimethyl acetylene-dicarboxylate to give substituted (ylidene) hydrazono(4-oxothiazolidin-5-ylidene) acetates in high yields. The synthesised compounds were characterised by spectroscopic methods and the structures confirmed by single crystal X-ray crystallography. Several mechanistic options involving nucleophilic interaction are presented
芳基缩氨基硫脲以简便的方法与乙炔-二羧酸二甲酯快速反应,以高产率得到取代的(亚基)腙(4-氧噻唑烷-5-亚基)乙酸酯。合成的化合物通过光谱方法进行表征,并通过单晶 X 射线晶体学确认其结构。介绍了涉及亲核相互作用的几种机械选择。
Thiadiazoline derivative
申请人:Murakata Chikara
公开号:US20060074113A1
公开(公告)日:2006-04-06
(wherein R
1
and R
4
are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkynyl, substituted or unsubstituted lower alkenyl, or the like; R
5
represents a substituted or unsubstituted heterocyclic group, substituted or unsubstituted aryl, or the like; R
2
represents —C(═W)R
6
or the like; R
3
represents a hydrogen atom, —C(═W
A
)R
6A
, or the like)
Antitumor agents which comprises a thiadiazoline derivative represented by the aforementioned general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient are provided.
(wherein R
1
and R
4
are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkynyl, substituted or unsubstituted lower alkenyl, or the like; R
5
represents a substituted or unsubstituted heterocyclic group, substituted or unsubstituted aryl, or the like; R
2
represents —C(═W)R
6
or the like; R
3
represents a hydrogen atom, —C(═W
A
)R
6A
, or the like)
Antitumor agents which comprises a thiadiazoline derivative represented by the aforementioned general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient are provided.
A mitotic kinesin Eg5 inhibitor which comprises a thiadiazoline derivative represented by the general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient:
[wherein R
1
represents a hydrogen atom and the like, R
2
represents a hydrogen atom, —C(═W)R
6
(wherein W represents an oxygen atom or a sulfur atom, and R
6
represents substituted or unsubstituted lower alkyl and the like) and the like, R
3
represents —C(═Z)R
19
(wherein Z represents an oxygen atom or a sulfur atom, and R
19
represents substituted or unsubstituted lower alkyl and the like) and the like, R
4
represents substituted or unsubstituted lower alkyl and the like, and R
5
represents substituted or unsubstituted aryl and the like] and the like are provided.
A mitotic kinesin Eg5 inhibitor which comprises a thiadiazoline derivative represented by the general formula (I) or a pharmacologically acceptable salt thereof as an active ingredient:
[wherein R
1
represents a hydrogen atom and the like, R
2
represents a hydrogen atom, —C(═W)R
6
(wherein W represents an oxygen atom or a sulfur atom, and R
6
represents substituted or unsubstituted lower alkyl and the like) and the like, R
3
represents —C(═Z)R
19
(wherein Z represents an oxygen atom or a sulfur atom, and R
19
represents substituted or unsubstituted lower alkyl and the like) and the like, R
4
represents substituted or unsubstituted lower alkyl and the like, and R
5
represents substituted or unsubstituted aryl and the like] and the like are provided.