AbstractA one‐pot oxidative transformation of aldehydes into hydroxamic acids by the use of an aqueous solution of hydroxylamine is reported. The methodology gives high yields and makes use of cheap, abundant and easily available reagents.magnified image
Cross-dehydrogenativecoupling (CDC) reactions of aldehydes with N-hydroxyimidates such as N-hydroxysuccinimide (NHSI), N-hydroxyphthalimide (NHPI) under catalyst-free conditions is described. Moreover, the desired products can be obtained simply by recrystallization from ethanol. This method is also applicable to the synthesis of amides in excellent yields. A radical mechanism of the type shown in
Structure-Based Design and Synthesis of the First Weak Non-Phosphate Inhibitors for IspF, an Enzyme in the Non-Mevalonate Pathway of Isoprenoid Biosynthesis
In this paper, we describe the structure-baseddesign, synthesis, and biologicalevaluation of cytosine derivatives and analogues that inhibit IspF, an enzyme in the non-mevalonate pathway of isoprenoid biosynthesis. This pathway is responsible for the biosynthesis of the C5 precursors to isoprenoids, isopentenyl diphosphate (IPP, 1) and dimethylallyl diphosphate (DMAPP, 2; Scheme 1). The non-mevalonate
The hydrolysis and reduction of Pt(iv) carbonates depend on the electron-withdrawing ability of the carbonates and the nature of the opposite axial ligands. The hydrolytic process for Pt(iv) carbonates proceeds by attacking the carbonyl carbon.
10',11'-MODIFIED SAXITOXINS USEFUL FOR THE TREATMENT OF PAIN
申请人:SITEONE THERAPEUTICS, INC.
公开号:US20170029431A1
公开(公告)日:2017-02-02
Provided herein are compounds, pharmaceutical compositions comprising the compounds, and methods of using the compounds and compositions in treating conditions associated with voltage-gated sodium channel function, for example conditions associated with pain. The compounds are 10′,11′-modified saxitoxins. The compounds are optionally additionally modified at carbon 13. In certain embodiments, the 10′,11′-modified saxitoxins are of Formula I: where R
1
, R
2
and R
3
are as described herein. Also provided herein are methods of treating pain in a mammal comprising administering an effective treatment amount of a 10′,11′ modified saxitoxin or composition to a mammal. In an embodiment, the mammal is a human.
Scalable Synthesis of <i>N</i>-Acylaziridines from <i>N</i>-Tosylaziridines
作者:Heather Rubin、Jennifer Cockrell、Jeremy B. Morgan
DOI:10.1021/jo401267j
日期:2013.9.6
N-Acylaziridines are important starting materials for the synthesis of chiral amine derivatives. The traditional methods for producing these activated aziridines have significant drawbacks. The gram scale synthesis of N-acylaziridines by deprotection of N-tosylaztridines and reprotection with N-hydroxysuccinimide derivatives is described. Mono- and disubstituted aziridines perform well, with complete retention of stereochemical purity. The consistently moderate yields are linked to the N-tosylaziridine deprotection step, while acylation with N-hydroxysuccinimide derivatives is highly efficient.