Novel chemotactic For-Met-Leu-Phe-OMe (fMLF-OMe) analogues based on Met residue replacement by 4-amino-proline scaffold: Synthesis and bioactivity
作者:Domenica Torino、Adriano Mollica、Francesco Pinnen、Federica Feliciani、Susanna Spisani、Gino Lucente
DOI:10.1016/j.bmc.2008.11.010
日期:2009.1
cis-(2S,4S) 4-Amino-proline (cAmp) and trans-(2S,4R) 4-amino-proline (tAmp) residues, bearing N-For or N-Boc substituents at the two amino groups, have been incorporated into the potent chemotactic agent fMLF-OMe in place of the N-terminal native (S)-methionine to give the analogues 17a–19a and 17b–19b. The new ligands have been examined for their activity (chemotaxis, superoxide anion production and
顺式-(2 S,4 S)4-氨基脯氨酸(cAmp)和反式-(2 S,4 R)4-氨基脯氨酸(tAmp)残基,在两个氨基上带有N -For或N -Boc取代基已将这些基团并入有效的趋化剂fMLF-OMe中,以代替N末端的天然(S)-蛋氨酸,以提供类似物17a - 19a和17b - 19b。已经检查了新的配体对人嗜中性粒细胞作为激动剂和拮抗剂的活性(趋化性,超氧阴离子的产生和溶菌酶的释放)。化合物19a和在脯氨酸支架上带有两个N- For基团的图19b是活性和选择性趋化剂。在N -Boc-tAmp残基的4-氨基处含有N -For的配体18b具有明显的趋化拮抗作用。讨论了不同取代基对新类似物N端位置的影响。