METHODS AND COMPOSITIONS FOR MAKING AN AMINO ACID TRIISOCYANATE
申请人:Warsaw Orthopedic, Inc.
公开号:US20150197488A1
公开(公告)日:2015-07-16
A method of making an amino acid triisocyanate is provided, the method comprising reacting an amino acid trihydrochloride with phosgene to form the amino acid triisocyanate. In some embodiments, the amino acid trihydrochloride comprises lysine ester trihydrochloride salt and the amino acid triisocyanate comprises lysine ester triisocyanate. In some embodiments, there is a lysine ester triisocyanate having a purity of at least about 98%, the lysine ester triisocyanate having a structure resulting from reacting lysine ester trihydrochloride salt with phosgene to form the lysine ester triisocyanate. These lysine ester triisocyanates can be used to make biodegradable polyurethanes.
Asymmetric Amino Acid Synthesis: Mitsunobu Reaction on Chiral Cyanohydrins
作者:Carl Decicco、Paul Grover
DOI:10.1055/s-1997-6139
日期:1997.6
BOC(SES)NH was reacted with chiral cyanohydrins using the Mitsunobu reaction to give good yields of protected α-aminonitriles, which were converted to chiral amino and imino acids.
METHODS AND COMPOSITIONS FOR MAKING AN AMINO ACID TRIHYDROCHLORIDE
申请人:Warsaw Orthopedic, Inc.
公开号:US20150197483A1
公开(公告)日:2015-07-16
In some embodiments, a method of making an amino acid trihydrochloride is provided, the method comprising reacting an amino acid monohydrochloride with an alkanolamine to form the amino acid trihydrochloride. In some embodiments, the amino acid monohydrochloride comprises lysine hydrochloride, which is mixed with ethanolamine to form lysine ester trihydrochloride. In some embodiments, there is a lysine ester trihydrochloride salt having a purity of at least about 98%, the lysine ester trihydrochloride salt having a structure resulting from reacting lysine hydrochloride and ethanolamine to form the lysine ester trihydrochloride salt. The lysine ester trihydrochloride can be made in one reaction vessel.
A new coupling reagent for peptide synthesis. Benzotriazolvyloxy-bis (pyrroltdino) -carbonium hexaflouorophosphate (BBC)
作者:Shaoqing Chen、Jiecheng Xu
DOI:10.1016/s0040-4039(00)92333-5
日期:1992.1
Benzotriazolyloxy-bis(pyrrolidino)-carbonium hexa- fluorophosphate (BBC) is found to be a new excellent couplingreagent devoid of cytotoxic by-product instead of HBTU and BOP. It has been applied in the solution and solid phase peptidesynthesis.
LAT1 activity of carboxylic acid bioisosteres: Evaluation of hydroxamic acids as substrates
作者:Arik A. Zur、Huan-Chieh Chien、Evan Augustyn、Andrew Flint、Nathan Heeren、Karissa Finke、Christopher Hernandez、Logan Hansen、Sydney Miller、Lawrence Lin、Kathleen M. Giacomini、Claire Colas、Avner Schlessinger、Allen A. Thomas
DOI:10.1016/j.bmcl.2016.09.001
日期:2016.10
demonstrated weak substrate activity, its structure–activity relationship (SAR) was further explored by synthesis and testing of HA derivatives of other LAT1 aminoacid substrates (i.e., Tyr, Leu, Ile, and Met). The potential for a false positive in the trans-stimulation assay caused by parent aminoacid was evaluated by conducting compound stability experiments for both HA-Leu and the corresponding methyl ester