Synthesis of inositol phospholipids with thiophosphoester bonds
摘要:
The synthesis of phosphatidylinositol (PI) analogues (+/-)1-O-(1-O-octadecanoyl-2-O-acetyl-rac-3-thioglycerylphosphoryl)-myo-inositol (7), (+/-)1-O-(1,2-di-O-octadecyl-rac-3-thiogly-cerylphosphoryl)-myo-inositol (14a), (+/-)1-O-(1,2-di-O-octyl-rac-3-thioglycerylphosphoryl)-myo-inositol (14b) and (+/-)1-O-(1-O-octadecyl-2-O-methyl-rac-3-thioglycerylphosphoryl)-myo-inositol (14c) designed to show a novel mode of PI-phospholipase C (PI-PLC) inhibition, is described.
[EN] CLEAVABLE MULTI-ALCOHOL-BASED MICROCAPSULES<br/>[FR] MICROCAPSULES CLIVABLES À BASE D'ALCOOLS MULTIPLES
申请人:FIRMENICH & CIE
公开号:WO2021023645A1
公开(公告)日:2021-02-11
The present invention relates to a new process for the preparation of microcapsules based on cleavable multi-alcohols. Cleavable multi-alcohol-based microcapsules are also an object of the invention. Perfuming compositions and consumer products comprising said capsules, in particular perfumed consumer products in the form of home care or personal care products, are also part of the invention.
[EN] METAL-CATALYZED OXIDATIVE COUPLING OF THIOLS<br/>[FR] COUPLAGE OXYDATIF CATALYSÉ PAR UN MÉTAL DE THIOLS
申请人:ECOLAB USA INC
公开号:WO2017024092A1
公开(公告)日:2017-02-09
Disclosed are methods for preparing disulfide compounds through oxidative coupling of thiol compounds. Thiols are oxidized to the corresponding disulfide compound in high yield in presence of a base and a metal salt. The method uses low catalyst loadings and provides organic disulfide compounds with little to no byproducts.
Methods for administering mitomycin C to a multi-drug resistant cell and for reducing the toxicity of the compound are described. In the methods, mitoymic C is provided in the form of a prodrug conjugate, where the drug is linked to a hydrophobic moiety, such as a lipid, through a cleavable dithiobenzyl linkage. The dithiobenzyl linkage is susceptible to cleavage by mild thiolysis, resulting in release of mitomycin C in its original form. The linkage is stable under nonreducing conditions. The prodrug conjugate can be incorporated into liposomes for administration in vivo and release of mitomycin C in response to endogenous in vivo reducing conditions or in response to administration of an exogenous reducing agent.
we report a biomimetic polydopamine (PDA) catalyst for oxidative thiol coupling. This reaction was accelerated with only a small amount of PDA particles in neutral, weakly alkaline, and even weakly acidic aqueousmedia at room temperature under an air atmosphere. The catalytic particles were facilely separated and were reused without a decrease in activity. The entire process is totally biofriendly