抑制组蛋白脱乙酰基酶(HDAC)会导致几乎所有肿瘤细胞系中的生长停滞,分化和凋亡,从而促进HDACs成为抗肿瘤治疗的有希望的靶标。在我们先前的研究中,我们开发了一系列新型的1,2,3,4-四氢异喹啉-3-羧酸衍生物作为HDAC抑制剂(HDACi),其中化合物7d表现出有希望的HDAC8抑制和抗增殖活性。在本文中,我们报告了新型的带有四氢异喹啉的异羟肟酸类似物作为潜在的HDACi和抗癌药的设计和开发。这些化合物的体外生物学评估显示对HDAC8的抑制作用得到改善(化合物31a和31b的nM IC 50中等)抑制HDAC8的功能)和在多种肿瘤细胞系中有效抑制生长。最重要的是,与批准的HDACi异戊酰苯胺异羟肟酸(SAHA)相比,化合物25e,34a和34b在人乳腺癌(MDA-MB-231)异种移植模型中表现出出色的体内抗癌活性。总体而言,我们的结果表明,带有异羟肟酸的四氢异喹啉是开发新型HDACi作为潜在抗癌药的绝佳模板。
抑制组蛋白脱乙酰基酶(HDAC)会导致几乎所有肿瘤细胞系中的生长停滞,分化和凋亡,从而促进HDACs成为抗肿瘤治疗的有希望的靶标。在我们先前的研究中,我们开发了一系列新型的1,2,3,4-四氢异喹啉-3-羧酸衍生物作为HDAC抑制剂(HDACi),其中化合物7d表现出有希望的HDAC8抑制和抗增殖活性。在本文中,我们报告了新型的带有四氢异喹啉的异羟肟酸类似物作为潜在的HDACi和抗癌药的设计和开发。这些化合物的体外生物学评估显示对HDAC8的抑制作用得到改善(化合物31a和31b的nM IC 50中等)抑制HDAC8的功能)和在多种肿瘤细胞系中有效抑制生长。最重要的是,与批准的HDACi异戊酰苯胺异羟肟酸(SAHA)相比,化合物25e,34a和34b在人乳腺癌(MDA-MB-231)异种移植模型中表现出出色的体内抗癌活性。总体而言,我们的结果表明,带有异羟肟酸的四氢异喹啉是开发新型HDACi作为潜在抗癌药的绝佳模板。
SYNTHESIS OF NEW CHIRAL PEPTIDE NUCLEIC ACID (PNA) MONOMERS
作者:Bogdan Falkiewicz、Wojciech Wiśniowski、Aleksandra S. Kołodziejczyk、Kazimierz Wiśniewski
DOI:10.1081/ncn-100002563
日期:2001.3.31
We have synthesised a series of new chiral type I peptidenucleicacidmonomers in total yields of 36-53%, derived from Val, Ile, Ser(Bzl), Pro, and Trp, employing convenient procedure.
Peptide mimetics of structure X herein which (i) provide a wide range of sidechain functions at all sidechain positions, (ii) can be incorporated in a peptide sequence, (iii) can be readily synthesized and (iv) have a variety of conformations. There is also provided a novel process which can provide valuable intermediates in relation to production of peptide mimetics of structure X which intermediates have a high degree of chemo- and stereo-selectivity. Preferred mimetics include structures I, II, III, IV, V and VI.
A Convenient Synthesis of N-Methoxy-N-Methylamides from Carboxylic Acids
作者:Mukund P. Sibi、Chad C. Stessman、Jeffrey A. Schultz、James W. Christensen、Jianliang Lu、Mali Marvin
DOI:10.1080/00397919508012689
日期:1995.4
Abstract Carboxylic acids can be converted to their corresponding N-methoxy-N-methylamides in high yields using 2-chloro-1-methylpyridinium iodide as the coupling agent. The reaction proceeds without racemization when chiral carboxylic acids are used as the starting material.
Difluoro Ketone Peptidomimetics Suggest a Large S1 Pocket for Alzheimer's γ-Secretase: Implications for Inhibitor Design
作者:Chad L. Moore、Dartha D. Leatherwood、Thekla S. Diehl、Dennis J. Selkoe、Michael S. Wolfe
DOI:10.1021/jm000100f
日期:2000.9.1
implicated in the etiology of Alzheimer's disease, is proteolysis within the transmembrane region of the amyloid precursor protein (APP) by gamma-secretase. Although considered an important target for therapeutic design, gamma-secretase has been neither well-characterized nor definitively identified. Previous studies in our laboratory using substrate-baseddifluoroketone and difluoro alcohol transition-state
Tin(ii) chloride assisted synthesis of N-protected γ-amino β-keto esters through semipinacol rearrangement
作者:Anupam Bandyopadhyay、Neha Agrawal、Sachitanand M. Mali、Sandip V. Jadhav、Hosahudya N. Gopi
DOI:10.1039/c0ob00199f
日期:——
A facile synthetic route for the preparation of N-protected γ-amino β-keto esters from amino aldehydes and ethyl diazoacetate is described. The two component coupling is facilitated by tin(II) chloride followed by semipinacol rearrangement leading to the product in quantitative yield. The reaction is mild, instantaneous and compatible with Boc-, Fmoc- and Cbz-amino protecting groups.