Conformational Aspects in the Design of Inhibitors for Serine Hydroxymethyltransferase (SHMT): Biphenyl, Aryl Sulfonamide, and Aryl Sulfone Motifs
作者:Geoffrey Schwertz、Michelle S. Frei、Matthias C. Witschel、Matthias Rottmann、Ubolsree Leartsakulpanich、Penchit Chitnumsub、Aritsara Jaruwat、Wanwipa Ittarat、Anja Schäfer、Raphael A. Aponte、Nils Trapp、Kerstin Mark、Pimchai Chaiyen、François Diederich
DOI:10.1002/chem.201703244
日期:2017.10.12
structures with P. vivax (Pv) SHMT were solved at 2.2–2.6 Å resolution. We observed an unprecedented influence of the torsion angle of ortho‐substituted biphenyl moieties on cell‐based efficacy. The peculiar lipophilic character of the sulfonyl moiety was highlighted in the complexes with aryl sulfonamide analogues, which bind in their preferred staggered orientation. The results are discussed within the context
由于对市售药物的抗药性的不断出现,疟疾仍然是对人类的主要威胁。合成了二十一种带有末端联苯,芳基磺酰胺或芳基砜基序的吡唑并吡喃基抑制剂,并针对叶酸循环的关键酶丝氨酸羟甲基转移酶(SHMT)进行了测试。在低纳摩尔范围(18-56 n m)的基于细胞的测定中,最佳配体可抑制靶标中的恶性疟原虫(Pf)和拟南芥(At)SHMT以及Pf NF54菌株。间日疟原虫的七个共晶体结构(Pv)SHMT的分辨率为2.2–2.6Å。我们观察到邻位取代联苯部分的扭转角对基于细胞的功效产生了前所未有的影响。在与芳基磺酰胺类似物的络合物中突出显示了磺酰基部分的特殊亲脂性,它们以它们优选的交错方向结合。在配体的构象偏好的背景下讨论了结果。