Methods and compositions for treating amyloid-related diseases
申请人:Kong Xianqi
公开号:US20060223855A1
公开(公告)日:2006-10-05
Methods, compounds, pharmaceutical compositions and kits are described for treating or preventing amyloid-related disease.
描述了用于治疗或预防与淀粉样蛋白相关疾病的方法、化合物、药物组合物和试剂盒。
Synthesis of macrocyclic precursors of the vioprolides
作者:Eibhlin Butler、Lucia Florentino、Damien Cornut、Gonzalo Gomez-Campillos、Hao Liu、Andrew C. Regan、Eric J. Thomas
DOI:10.1039/c8ob01756e
日期:——
important targets for synthesis because of their novel biological activities and challenging chemical structures. Following early work on the synthesis of a modified tetrapeptide that contained both the (E)-dehydrobutyrine and thiazoline components of vioprolide D, problems were encountered in taking an (E)-dehydrobutyrine containing intermediate further into the synthesis. A second approach to vioprolides
Probing Host-Selective Phytotoxicity: Synthesis and Biological Activity of Phomalide, Isophomalide, and Dihydrophomalide
作者:Dale E. Ward、Alfredo Vázquez、M. Soledade C. Pedras
DOI:10.1021/jo982376p
日期:1999.3.1
anoic acid] is the host-selective phytotoxin produced by the fungus [Leptosphaeria maculans (Desm.) Ces. etde Not., asexual stage Phoma lingam (Tode ex Fr.) Desm.] which causes blackleg disease (a devastating disease of several economically important brassica crops). Efficient total syntheses of phomalide, its (Z)-isomer isophomalide, and the two dihydro analogues [(R)-dihydrophomalide and (S)-dihydrophomalide]
cyclic structure and the excellent anticancer activity, synthesis of Galaxamide and its analogs and their subsequent bio-applications have attracted great attention. In the present work, we synthesized six Galaxamide analogs by replacing one of the l-leucines with phenylalanine and varying the d-amino acid position. The anticancer effect of the synthesized Galaxamide analogs was tested against four in vitro
An efficient synthesis of [4.4]-spirolactam restricted derivatives of the didemnin side chain dipeptide l-Pro-N-Me-d-Leu is described. This methodology involves: (a) peptide coupling of N-Boc-2-allylproline with d-Leu-OBn; (b) OsO4/NaIO4 mediated allyl oxidation and intramolecular cyclization to the corresponding cyclic hemiaminals; and (c) NaBH4 mediated reduction of an intermediate N-acyliminium
描述了一种有效的合成双嘧达明侧链二肽1-Pro- N -Me-d-Leu的[4.4]-螺内酰胺限制的衍生物。该方法涉及:(a)N -Boc-2-烯丙基脯氨酸与d-Leu-OBn的肽偶联;(b)OsO 4 / NaIO 4介导的烯丙基氧化和分子内环化成相应的环状半胱氨酸;(c)NaBH 4介导的中间N-酰基酰亚胺离子的还原。该合成策略比先前报道的合成[4.4]-螺内酰胺β-turn模拟物的策略提供了明显更好的结果。