金黄色葡萄球菌是医院和社区获得性感染的最常见原因之一,耐药菌株每年导致数万人死亡。金黄色葡萄球菌分选酶 A 抑制剂旨在干扰毒力决定因素。我们已经确定二硫烷基苯甲酰胺是一类新型有效的分选酶 A 抑制剂,通过活性位点半胱氨酸的共价修饰发挥作用。合成了一系列广泛的衍生物来推导构效关系(SAR)。体外和计算机方法使实验观察到的结合亲和力和选择性合理化。研究发现,最活跃的化合物具有个位数的微摩尔 Ki 值,在 10 μM 的有效抑制剂浓度下,金黄色葡萄球菌纤维蛋白原附着量减少高达 66%。这种新分子类别表现出最小的细胞毒性、较低的细菌生长抑制和分选酶介导的金黄色葡萄球菌细胞粘附受损。
[EN] CALICHEAMICIN DERIVATIVES AND ANTIBODY DRUG CONJUGATES THEREOF<br/>[FR] DÉRIVÉS DE CALICHÉAMICINE ET CONJUGUÉS ANTICORPS-MÉDICAMENTS DE CEUX-CI
申请人:PFIZER
公开号:WO2018138591A1
公开(公告)日:2018-08-02
The present invention is directed to novel calicheamicin derivatives useful as payloads in antibody-drug-conjugates (ADC's), and to payload-linker compounds and ADC compounds comprising the same; to pharmaceutical compositions comprising the same and to methods for using the same to treat pathological conditions such as cancer.
The present invention provides a process for producing a comb polymer comprising the steps of: a) providing: (i) (w+z) molar equivalents of a monomer; (ii) one molar equivalent of an initiator compound of formula (IX), wherein B
3
represents a halogen, B
2
represents H or a halogen, Y
1
represents a group capable of attaching the residue of an antibody or fragment thereof or capable of being converted into such a group, L represents a linker group, y is 1, 2 or 3, w is at least 1 and z is 0 or greater; (iii) a catalyst capable of catalysing the polymerisation of a plurality of the monomers to produce the comb polymer; and b) causing the catalyst to catalyse, in combination with the initiator, the polymerisation of a plurality of the monomers (i) to produce the comb polymer.
US8129505B2
申请人:——
公开号:US8129505B2
公开(公告)日:2012-03-06
Asymmetric Disulfanylbenzamides as Irreversible and Selective Inhibitors of<i>Staphylococcus aureus</i>Sortase A
community-acquired infections, with drug-resistant strains being responsible for tens of thousands of deaths per year. S. aureus sortase A inhibitors are designed to interfere with virulence determinants. We have identified disulfanylbenzamides as a new class of potent inhibitors against sortase A that act by covalent modification of the active-site cysteine. A broad series of derivatives were synthesized to
金黄色葡萄球菌是医院和社区获得性感染的最常见原因之一,耐药菌株每年导致数万人死亡。金黄色葡萄球菌分选酶 A 抑制剂旨在干扰毒力决定因素。我们已经确定二硫烷基苯甲酰胺是一类新型有效的分选酶 A 抑制剂,通过活性位点半胱氨酸的共价修饰发挥作用。合成了一系列广泛的衍生物来推导构效关系(SAR)。体外和计算机方法使实验观察到的结合亲和力和选择性合理化。研究发现,最活跃的化合物具有个位数的微摩尔 Ki 值,在 10 μM 的有效抑制剂浓度下,金黄色葡萄球菌纤维蛋白原附着量减少高达 66%。这种新分子类别表现出最小的细胞毒性、较低的细菌生长抑制和分选酶介导的金黄色葡萄球菌细胞粘附受损。
Synthetic and computational investigation of neighboring group participation by a nucleophilic disulfide bond
Disulfide bonds of 2-isocyanatophenyl methyl disulfide and 2-endo-isocyanato-6-endo-(methyldisulfanyl)bicyclo[2.2.1]heptane showed neighboringgroupparticipation in the formation of thiocarbamates. Natural Bond Orbital (NBO) analyses revealed that the unusual nucleophilicity requires a rigid through-space interaction between a lone pair of the disulfide bond and an antibonding orbital of isocyanate