Introducing Savie: A Biodegradable Surfactant Enabling Chemo- and Biocatalysis and Related Reactions in Recyclable Water
作者:Joseph R. A. Kincaid、Madison J. Wong、Nnamdi Akporji、Fabrice Gallou、David M. Fialho、Bruce H. Lipshutz
DOI:10.1021/jacs.2c13444
日期:——
organic synthesis in recyclable water. This includes homogeneouscatalysis (including examples employing only ppm levels of catalyst), heterogeneous catalysis, and biocatalytic transformations, including a multistep chemoenzymatic sequence. Use of Savie frequently leads to significantly higher yields than do conventional surfactants, while obviating the need for waste-generating organic solvents.
Savie 是一种可生物降解的表面活性剂,源自维生素 E 和聚肌氨酸 (PSar),开发用于可循环水中的有机合成。这包括均相催化(包括仅使用 ppm 级催化剂的例子)、多相催化和生物催化转化,包括多步化学酶序列。使用 Savie 通常会比传统表面活性剂产生显着更高的产率,同时无需使用产生废物的有机溶剂。
Vinyl Sulfone-Based Peptidomimetics as Anti-Trypanosomal Agents: Design, Synthesis, Biological and Computational Evaluation
作者:Elizabeth Dunny、William Doherty、Paul Evans、J. Paul G. Malthouse、Derek Nolan、Andrew J. S. Knox
DOI:10.1021/jm400294w
日期:2013.9.12
A series of vinyl sulfone-containing peptidomimetics were rationally designed, synthesized, and evaluated against Trypanosoma brucei brucei. These electrophilic compounds are likely to exert their antitrypanosomal activity via inhibition of trypanosomal cysteine proteases, TbCatB and rhodesain, through alkylation of a key cysteine residue Within the protease active site. The series was designed to present complementary groups to naturally recognized peptide substrates while probing tolerance to a range of substitutions at the PI, P1', and P2 positions. The most potent compound, 29 (EC50 = 70 nM, T. b. brucei whole cell assay), displayed minimal toxicity (>785 times Selectivity) when assayed for cytotoxicity against the human promyelocytic leukemia (HL-60) cell line. Cells treated with compound 29, as with K777 (2), exhibited an increase in both the number of multinucleated cells and cells with swollen flagellar pockets. Computational analysis revealed a strong correlation between the hypothetical binding mode in TbCatB/rhodesain and trypanocidal activity in vitro.