Highly diastereoselective Heck–Matsuda reaction with pyrazolyl diazonium salts
作者:F. Bellina、F. Berti、S. M. Bertozzi、T. Bandiera、F. Bertozzi
DOI:10.1039/d3nj01724a
日期:——
The Heck–Matsuda (HM) reaction is a powerful synthetic approach cut out for C–C bonds formation under mild conditions. We demonstrated that pyrazolyl diazonium salts are suitable reagents in this protocol, allowing us to deliver highly substituted cyclopentenols and cyclopentenamines with an excellent degree of diastereoselectivity and a control of enantioselectivity.
The invention provides compounds having the general formula I:
and salts thereof, wherein the variables RA, RB, RC, L1, L2, L3, A, B, C, X, Y, Z, E, m, n, and p have the meaning as described herein, and compositions containing such compounds and methods for using such compounds and compositions.
本发明提供了具有通式 I 的化合物:
及其盐类,其中变量 RA、RB、RC、L1、L2、L3、A、B、C、X、Y、Z、E、m、n 和 p 的含义如本文所述,以及含有此类化合物的组合物和使用此类化合物及组合物的方法。
<i>N</i>-(1-Benzyl-3,5-dimethyl-1<i>H</i>-pyrazol-4-yl)benzamides: Antiproliferative Activity and Effects on mTORC1 and Autophagy
Guided by antiproliferative activity in MIA PaCa-2 cells, we have performed preliminary structure activity relationship studies on N-(1-benzyl-3,5-dimethyl-1H-pyrazol-4-yl)benzamides. Two selected compounds showed submicromolar antiproliferative activity and good metabolic stability. Both compounds reduced mTORC1 activity and increased autophagy at the basal level. In addition, they disrupted autophagic flux by interfering with mTORC1 reactivation and clearance of LC3-II under starvation/refeed conditions, as evidenced by accumulation of LC3-II and abnormal LC3 labeled punctae. Therefore, N-(1-benzyl-3,5-dimethyl-1H-pyrazol-4-yl)benzamides may represent a new class of autophagy modulators that possesses potent anticancer activity and potentially a novel mechanism of action.
Musante; Stener, Gazzetta Chimica Italiana, 1959, vol. 89, p. 1579,1594