Oxidation of Alkynes by Hydrogen Peroxide Catalyzed by Methylrhenium Trioxide
作者:Zuolin Zhu、James H. Espenson
DOI:10.1021/jo00129a010
日期:1995.12
The oxidation of alkynes with hydrogen peroxide is catalyzed by methylrhenium trioxide. The reactions can be rationalized by postulating that an oxirene intermediate is formed between a rhenium peroxide and the alkyne. Internal alkynes yield alpha-diketones and carboxylic acids, the latter from the complete cleavage of the triple bonds. Rearrangement products were observed only for aliphatic alkynes. Terminal alkynes gave carboxylic acids and their derivatives and alpha-keto acids as the major products, but their yields varied with the solvent used.
Conjugates useful in the treatment of prostate cancer
申请人:Brady F. Stephen
公开号:US20070021350A1
公开(公告)日:2007-01-25
Chemical conjugates which comprise oligopeptides, having amino acid sequences that are selectively proteolytically cleaved by free prostate specific antigen (PSA) and known cytotoxic agents are disclosed. The conjugates of the invention are characterized by attachment of the cleavable oligopeptide to the oxygen atom at the 4-position on a vinca drug that has be desacetylated. Such conjugates are useful in the treatment of prostatic cancer and benign prostatic hypertrophy (BPH).
ADHESIVE COMPOSITIONS AND METHODS
申请人:Novomer, Inc.
公开号:US20150083326A1
公开(公告)日:2015-03-26
The present invention encompasses polyurethane adhesive compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane adhesives derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure. In another aspect, the invention provides articles comprising the inventive polyurethane compositions as well as methods of making such compositions.
TREPROSTINIL DERIVATIVES AND COMPOSITIONS AND USES THEREOF
申请人:CORSAIR PHARMA, INC.
公开号:US20160368854A1
公开(公告)日:2016-12-22
The present disclosure provides treprostinil derivatives that can act as prodrugs of treprostinil. The treprostinil derivatives can be used to treat any conditions responsive to treatment with treprostinil, including pulmonary hypertension, such as pulmonary arterial hypertension.