Silver-Catalyzed Direct Thiolation of Quinones by Activation of Aryl Disulfides to Synthesize Quinonyl Aryl Thioethers
摘要:
A silver-catalyzed coupling reaction of quinones with aryl disulfides for the synthesis of quinonyl aryl thio ethers is described. In the presence of AgOAc (0.2 equiv)/dppp (0.24 equiv) as the catalyst, (NH4)(2)S2O8 (3.0 equiv) as the oxidant, and Bu4NBF4 (1.0 equiv) as the additive, the reaction is simple, provides high yield (up to 88% yield), and possesses a broad substrate scope. The reaction is believed to proceed via direct activation of disulfides evidenced by observation of a metathesis reaction between two different disulfides placed together under the reaction conditions and C-13 NMR spectroscopy analysis.
CHEMICAL AGENTS FOR THE PREVENTION OF INHIBITION OR TUMOR METASTASIS
申请人:Bresnick Anne R.
公开号:US20130090355A1
公开(公告)日:2013-04-11
The present invention provides methods of preventing or inhibiting tumor metastasis in a subject by administering a therapeutically effective amount of (1) a compound from a group of enumerated compounds, or a pharmaceutically acceptable salt thereof; (2) an agent that covalently modifies at least one cysteine residue of S100A4 protein; or (3) an agent that inhibits the interaction between S100A4 and myosin-IIA.
[EN] CHEMICAL AGENTS FOR THE PREVENTION OR INHIBITION OF TUMOR METASTASIS<br/>[FR] AGENTS CHIMIQUES POUR LA PRÉVENTION OU L'INHIBITION DE MÉTASTASES TUMORALES
申请人:EINSTEIN COLL MED
公开号:WO2011146101A1
公开(公告)日:2011-11-24
The present invention provides methods of preventing or inhibiting tumor metastasis in a subject by administering a therapeutically effective amount of (1) a compound from a group of enumerated compounds, or a pharmaceutically acceptable salt thereof; (2) an agent that covalently modifies at least one cysteine residue of S100A4 protein; or (3) an agent that inhibits the interaction between S100A4 and myosin-IIA.