Amine-Linked Flavonoids as Agents against Cutaneous Leishmaniasis
作者:Chin-Fung Chan、Zhen Liu、Iris L. K. Wong、Xianliang Zhao、Zaofeng Yang、Jiale Zheng、Marianne M. Lee、Michael K. Chan、Tak Hang Chan、Larry M. C. Chow
DOI:10.1128/aac.02165-20
日期:2021.4.19
We have designed, synthesized, and characterized a library of 38 novel flavonoid compounds linked with amines. Some of these amine-linked flavonoids have potent
in vitro
activity against parasites that cause cutaneous leishmaniasis, a tropical disease endemic in 80 countries worldwide.
Experimental and mechanistic insights into copper(<scp>ii</scp>)–dioxygen catalyzed oxidative N-dealkylation of N-(2-pyridylmethyl)phenylamine and its derivatives
supported Cu(II)/O2 catalyticsystem was explored with the synthesis of pyridylmethyl-based compounds of carboxylate (PyCOOH), amide (PyC(O)NHPh), and imine (PyCHNPh) from the oxidative N-dealkylation of N-(2-pyridylmethyl)phenylamine (PyCH2NHPh) and its derivatives, by means of controlling the addition of a base and/or water to the reaction system under a dioxygen atmosphere at roomtemperature. Experimental
The development of cancer treatments requires continuous exploration and improvement, in which the discovery of new drugs for the treatment of cancer is still an important pathway. In this study, based on the molecular hybridization strategy, a new structural framework with an N-aryl-N’-arylmethylurea scaffold was designed, and 16 new target compounds were synthesized and evaluated for their antiproliferative
Enantioselective Sulfoxidation Catalyzed by a Bisguanidinium Diphosphatobisperoxotungstate Ion Pair
作者:Xinyi Ye、Adhitya Mangala Putra Moeljadi、Kek Foo Chin、Hajime Hirao、Lili Zong、Choon-Hong Tan
DOI:10.1002/anie.201601574
日期:2016.6.13
The first enantioselective tungstate‐catalyzed oxidation reaction is presented. High enantioselectivities were achieved for a variety of drug‐like phenyl and heterocyclic sulfides under mild conditions with H2O2, a cheap and environmentally friendly oxidant. Synthetic utility was demonstrated through the preparation of (S)‐Lansoprazole, a commercial proton‐pump inhibitor. The active ion‐pair catalyst
提出了第一个对映选择性钨酸盐催化的氧化反应。在温和的条件下,使用廉价且环保的氧化剂H 2 O 2可实现多种药物样的苯基和杂环硫化物的高对映选择性。通过制备商业化的质子泵抑制剂(S)-兰索拉唑证明了其合成用途。使用拉曼光谱法和计算研究,活性离子对催化剂被鉴定为双胍双磷酸双过氧钨酸盐。