[EN] METHOD FOR MODIFICATION OF ORGANIC MOLECULES<br/>[FR] PROCÉDÉ DE MODIFICATION DE MOLÉCULES ORGANIQUES
申请人:UNIV NANYANG TECH
公开号:WO2012158122A1
公开(公告)日:2012-11-22
The present invention is directed to a method of alkylating a thiol group (R-S-H) or seleno group (R-Se-H) in a target molecule wherein the method comprises: reacting a target molecule comprising at least one thiol group with a compound of formula (I) or (II): wherein R is an acetyl group or any other acyl group or is a group comprising any one of: or wherein R in formula (II) can also be an alkyl group; and wherein R' is selected from a group consisting of a hydrogen, a methyl group and an ethyl group.
作者:Sarbjeet Kaur、Gaoyuan Zhao、Evan Busch、Ting Wang
DOI:10.1039/c8ob02313a
日期:——
presence of visible light is used to initiate thiol–ene and thiol–yne reactions. Thiyl radicals are generated upon quenching the photoexcited catalyst with a range of thiols. The highlighted mild nature of the reaction conditions allows a broad substrate scope of the reactants. Relying on this efficient metal-free condition, both thiol–ene and thiol–yne reactions between carbohydrates and peptides could
A method of combating and controlling insects, acarines, nematodes or molluscs which comprises applying to a pest, to a locus of a pest, or to a plant susceptible to attack by a pest an insecticidally, acaricidally, nematicidally or molluscicidally effective amount of a compound of formula (I), wherein R1 is R4, YR5 or ZR6; Y is CO or C=S; Z is S, S(O), SO2 or PO2; and A is an optionally substituted phenyl or an optionally substituted heteroaromatic ring, wherein R1 to R6 are defined organic groups; new compounds are also provided.
Radicals at work: Radical‐mediated thiol‐ene addition of the thiol group of Cys to N‐vinylacetamide gives acetyl‐thialysine (KSAc), a near‐perfect mimic of acetyl‐lysine (see picture). The reaction is highly efficient with near quantitative conversion obtained in short reaction times. The generated KSAc is functionally identical or similar to its native counterpart.
The present invention provides microparticles comprising a sulphur-containing compound, such as cysteamine, or a pharmaceutically acceptable salt, hydrate or ester thereof. Also provided is a composition comprising the microparticles and a stabilizing agent.