5625-40-1Relevant articles and documents
DIMERS FROM BIOREACHABLE MOLECULES AS COPOLYMERS
-
, (2022/01/12)
The present disclosure relates to compositions derived from bioreachable molecules, such as amino acids or hydroxy acids. In particular, the composition can be a monomer, a polymer, or a copolymer derived from an amino acid dimer or a hydroxy acid dimer.
MODULUS MODIFIERS AND FILMS THEREOF
-
, (2022/01/12)
The present disclosure relates to compositions derived from bioreachable molecules, such as amino acids and/or steroids. In particular, the composition can be a monomer, a polymer, or a copolymer derived from an amino acid dimer. Such compositions can optionally include a functionalized steroid.
POLYMER COMPOSITIONS COMPRISING COMPOUNDS DERIVED FROM BIOLOGY
-
, (2020/07/21)
A compound comprises a moiety selected from a cyclic dimer of a first and a second amino acid or a 2.5-diketopiperazine made from an amino acid. The moiety can be produced by fermentation. The compound further includes a polymerizable group. Additionally,
Cyclic dipeptides: Catalyst/promoter-free, rapid and environmentally benign cyclization of free amino acids
Nonappa,Ahonen, Kari,Lahtinen, Manu,Kolehmainen, Erkki
supporting information; experimental part, p. 1203 - 1209 (2011/06/26)
"The best catalyst is no catalyst." With growing public concern over global warming and the amount of greenhouse gases, it is important to reduce the amount of chemicals and eliminate waste, to obtain better results in a simple, selective, safe, and environmentally benign fashion compared to conventional tedious chemical synthesis. Herein, we disclose an environmentally benign, rapid, catalyst/promoter/coupling reagent-free cyclization procedure of free amino acids to furnish exclusively cyclic dipeptides (2,5- diketopiperazines, DKPs) in excellent or even quantitative yield, along with their solid state self-assembling properties. This process is extremely simple and highly efficient with little or no traditional synthetic skills and without any chromatographic purification. Synthesis of structurally diverse DKPs has been achieved with a dramatic decrease in the reaction time, the amount/number of solvents used, a significant increase in the yield and nearly complete elimination of waste. As a result, this is an excellent example for the environmentally benign, clean and green chemistry concept. The most exciting outcome of our investigation is an unusual case of chiral self-recognition encountered upon the cyclization of rac-pipecolic acid, which resulted in the formation of the meso-product exclusively.
Pyrazine Chemistry. II. Reduction of 3,6-Dibenzylidenepiperazine-2,5-diones
Marcuccio, Sebastian M.,Elix, John A.
, p. 1791 - 1794 (2007/10/02)
A reinvestigation of the reduction of 3,6-dibenzylidenepiperazine-2,5-dione (1) with zinc and acetic acid established that this reaction gave (Z)-6-benzyl-3-benzylidenepiperazine-2,5-dione (10).When a mixture of acetic acid and hydrochloric acid was used
