211689-64-4

Upstream product

• 211689-63-3 (2-{2-[2-tert-butoxycarbonylamino-3-(1H-indol-3-yl)-propionylamino]-3-phenyl-propionylamino}-3-phenyl-propyl)-carbamic acid benzyl ester 
• 185384-16-1 (2R)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropylamine 
• 334942-04-0 [(R)-2-((S)-2-tert-Butoxycarbonylamino-3-phenyl-propionylamino)-3-phenyl-propyl]-carbamic acid benzyl ester 
• 835916-04-6 (2-tert-butoxycarbonylamino-3-phenyl-propyl)-carbamic acid benzyl ester 
• 501-53-1 benzyl chloroformate 
• 13734-34-4 N-tert-butoxycarbonyl-L-phenylalanine 

Downstream Products

• 437985-39-2 (R)-2-{[(S)-1-[(S)-1-((R)-1-Aminomethyl-2-phenyl-ethylcarbamoyl)-2-phenyl-ethylcarbamoyl]-2-(1H-indol-3-yl)-ethylcarbamoyl]-methyl}-succinic acid 4-tert-butyl ester 
• 437985-04-1 (S)-2-{[(S)-1-[(S)-1-((R)-1-Aminomethyl-2-phenyl-ethylcarbamoyl)-2-phenyl-ethylcarbamoyl]-2-(1H-indol-3-yl)-ethylcarbamoyl]-methyl}-succinic acid 4-tert-butyl ester 
• 437985-07-4 [(2S,5S,8R,12S)-5,8-Dibenzyl-2-(1H-indol-3-ylmethyl)-3,6,11,14-tetraoxo-1,4,7,10-tetraaza-cyclotetradec-12-yl]-acetic acid tert-butyl ester 
• 437985-42-7 [(2S,5S,8R,12R)-5,8-Dibenzyl-2-(1H-indol-3-ylmethyl)-3,6,11,14-tetraoxo-1,4,7,10-tetraaza-cyclotetradec-12-yl]-acetic acid tert-butyl ester 

Relevant academic research and scientific papers

Insertion of an aspartic acid moiety into cyclic pseudopeptides: Synthesis and biological characterization of potent antagonists for the human tachykinin NK-2 receptor

A new series of monocyclic pseudopeptide tachykinin NK-2 receptor antagonists has been derived from the lead compound MEN11558. A synthesis for these molecules sharing the same intermediate was designed and performed. The replacement of the succinic moiety with an aspartic acid and the functionalization of its amino group with a wide variety of substituents led to very potent and selective NK-2 antagonists. Best results were obtained through the insertion in position 12 of an amino group with R configuration, linked by a short spacer to a saturated nitrogen heterocycle (morpholine, piperidine, or piperazine). The study led to compounds 54 and 57, endowed with high in vivo potency at very low doses and long duration of action in animal models of bronchoconstriction. In particular 54 and 57 completely inhibited NK-2 agonist induced bronchoconstriction in guinea pig after intratracheal administration at subnanomolar doses (ED50 = 0.27 nmol/kg and 0.15 nmol/kg, respectively).

Insertion of 2-carboxysuccinate and tricarballylic acid fragments into cyclic-pseudopeptides: New antagonists for the human tachykinin NK-2 receptor

A series of cylic pseudopeptides were the synthesized containing the sequence -Trp-Phe-(D)PheΨCH2NH-, the terminal ends of which were bound to 2-carboxy succinate or enantiomerically enriched tricarballylic acid to give the final cyclic structu