Na-exchanged X type zeolite, commercially available as MS-13X, effectively catalyzes thiol-disulfane exchange reactions under aerobic mild conditions to give the unsymmetrical disulfanes in good-to-high yields. Various thiols and disulfanes are tolerant in the catalytic systems. Preliminary mechanistic studies suggest the involvement of base-catalyzed SN2-S displacement and/or addition-elimination mechanisms
Na 交换的 X 型沸石,作为 MS-13X 可商购,在有氧温和条件下有效催化硫醇 - 二硫烷交换反应,以良好到高的产率得到不对称二硫烷。在催化系统中可以耐受各种硫醇和二硫烷。初步的机理研究表明,碱催化的 S N 2-S 置换和/或加成消除机制参与了氢键相互作用。
[EN] SULFUR-CONTAINING COMPOUNDS AS ANTI-PROLIFERATIVE AGENTS<br/>[FR] COMPOSÉS CONTENANT DU SOUFRE UTILISÉS EN TANT QU'AGENTS ANTIPROLIFÉRATIFS
申请人:221076 ONTARIO INC
公开号:WO2013006971A1
公开(公告)日:2013-01-17
Novel sulphur containing compounds of the formula RSSCH3, wherein R is pyridine, phenylamine or pynmidine, and pharmaceutically acceptable salts thereof are disclosed, which have utility as anti-proliferative agents against mammalian cells. The invention provides a method for synthesizing the sulphur-containing compounds.
The present invention relates to fluorescent and/or targeting lipophilic compounds having the general formula (R1O)(R2O)P(O)—R3-R4-R5 wherein R1 and R2 are each independently a linear or branched, saturated or unsaturated C2-C24 alkyl, or a linear or branched, saturated or unsaturated C2-C24 monoalkenyl or polyalkenyl, the polyalkenyl having from 2 to 4 double bonds, or a linear or branched, saturated or unsaturated C2-C24 monoalkinyl or polyalkinyl, the polyalkinyl having from 2 to 4 triple bonds; R3 is selected from 0, S, —C(R6)2-, —CH(R7)-, —C(S)—N(R6)-, —CH(SR7)-S—S— or —N(R6)- wherein R6 is a hydrogen atom or a C1-C4 alkyl, and R7 is a C1-C4 alkyl; R4 comprises at least one junction function and at least one linker; and R5 is at least one chemical fluorescent group or at least one targeting group. Methods for preparing said lipophilic compounds are also disclosed.
COMPOSITION OF POLYETHYLENE GLYCOL MALEIMIDE DERIVATIVE AND POLYMERIZATION INHIBITOR
申请人:Jenkem Technology Co., Ltd. (Beijing)
公开号:EP3604480A1
公开(公告)日:2020-02-05
The present invention provides a composition of a polyethylene glycol maleimide derivative and a polymerization inhibitor. In particular, the present invention provides a composition of an 8-arm polyethylene glycol maleimide derivative and a phenolic polymerization inhibitor. The ingredient and content of the polymerization inhibitor in the composition are reasonably chosen, thereby significantly increasing stability of the polyethylene glycol maleimide derivative, effectively avoiding the undesirable effect of gel solidifying due to polymerization during storage and transportation, and extending a pot life and shelf life of a product thereof.