多重耐药细菌的出现迫切需要具有新颖作用机制的抗生素。细菌细胞分裂蛋白 FtsZ 是新型抗生素开发的一个有吸引力的靶点。苯并[ c ]菲啶血根碱和二苯并[ a , g ]喹嗪-7-鎓小檗碱是两种结构相似的植物生物碱,可改变FtsZ功能。5-甲基苯并[ c ]菲啶鎓衍生物的1位或二苯并[ a , g ]喹嗪-7-鎓衍生物的2位上疏水性官能团的存在与显着增强的抗菌活性相关。3-苯基异喹啉代表这两种生物碱环系统内的亚基。已经合成了几种 3-苯基异喹啉和 3-苯基异喹啉鎓衍生物,并评估了其对金黄色葡萄球菌和粪肠球菌的抗菌活性,包括耐甲氧西林金黄色葡萄球菌(MRSA) 和耐万古霉素粪肠球菌(VRE)的多重耐药菌株。已发现许多衍生物对 MRSA 和 VRE 均具有活性。使用荧光光谱法证明并表征了选定化合物与金黄色葡萄球菌FtsZ (SaFtsZ)的结合。此外,这些化合物还被证明可以作为 SaFtsZ 聚合物的稳定剂和
多重耐药细菌的出现迫切需要具有新颖作用机制的抗生素。细菌细胞分裂蛋白 FtsZ 是新型抗生素开发的一个有吸引力的靶点。苯并[ c ]菲啶血根碱和二苯并[ a , g ]喹嗪-7-鎓小檗碱是两种结构相似的植物生物碱,可改变FtsZ功能。5-甲基苯并[ c ]菲啶鎓衍生物的1位或二苯并[ a , g ]喹嗪-7-鎓衍生物的2位上疏水性官能团的存在与显着增强的抗菌活性相关。3-苯基异喹啉代表这两种生物碱环系统内的亚基。已经合成了几种 3-苯基异喹啉和 3-苯基异喹啉鎓衍生物,并评估了其对金黄色葡萄球菌和粪肠球菌的抗菌活性,包括耐甲氧西林金黄色葡萄球菌(MRSA) 和耐万古霉素粪肠球菌(VRE)的多重耐药菌株。已发现许多衍生物对 MRSA 和 VRE 均具有活性。使用荧光光谱法证明并表征了选定化合物与金黄色葡萄球菌FtsZ (SaFtsZ)的结合。此外,这些化合物还被证明可以作为 SaFtsZ 聚合物的稳定剂和
The invention provides a compound of formula (I): or a salt or prodrug thereof, wherein Y, W, Z, Z1, Z2, Z3, Z4, and R1- R12 have any of the values described in the specification, as well as compositions comprising a compound of formula (I). The compounds are useful as antibacterial agents.
The present invention relates to methods and compositions that affect the GTP-binding activity of members of the Rho family GTPases, preferably Rac GTPases (Rac1, Rac1b, Rac2 and/or Rac3).
The invention provides a compound of formula (I): or a salt or prodrug thereof, wherein Y, W, Z, Z
1
, Z
2
, Z
3
, Z
4
, and R
1
-R
12
have any of the values described in the specification, as well as compositions comprising a compound of formula (I). The compounds are useful as antibacterial agents.
The invention provides a compound of formula (I): or a salt or prodrug thereof, wherein R1, R4-R8, R10, R2′-R6′, W, and A have any of the values described in the specification, as well as compositions comprising a compound of formula (I). The compounds are useful as antibacterial agents.
The synthesis of a series of berberine, phenantridine and isoquinoline derivatives was realized to explore their Rho GTPase nucleotide inhibitory activity. The compounds were evaluated in a nucleotide binding competition assay against Rac1, Rac1b, Cdc42 and in a cellular Rac GTPase activation assay. The insertion of 19 AA in the splice variant Rac1b is shown to be sufficient to introduce a conformational difference that allows compounds 4, 21, 22, and 26 to exhibit selective inhibition of Rac 1b over Rac1. (C) 2009 Elsevier Ltd. All rights reserved.