5211-24-5Relevant academic research and scientific papers
Total synthesis of penmacric acids via an intermolecular radical addition reaction
Ueda, Masafumi,Ono, Ayako,Nakao, Dai,Matsuno, Kenji,Naito, Takeaki,Miyata, Okiko
, p. 6866 - 6874 (2013/07/26)
The total syntheses of penmacric acid and its three stereoisomers were accomplished through the intermolecular radical addition reaction of the 4-pyrrolidyl radical derived from trans-4-hydroxy-l-proline. Furthermore, 1′,3-diepi-penmacric acid was synthesized stereoselectively via double stereoinduction in the radical reaction.
First total synthesis of penmacric acid and its stereoisomer
Ueda, Masafumi,Ono, Ayako,Nakao, Dai,Miyata, Okiko,Naito, Takeaki
, p. 841 - 844 (2007/10/03)
The total synthesis of penmacric acid and its stereoisomer, epipenmacric acid, is reported for the first time starting from trans-4-hydroxy-l-proline. Et3B-induced diastereoselective radical addition reaction was used to control stereoselectivity at the C3 stereogenic center as a key step.
Synthesis, biological evaluation, and pharmacokinetic study of prolyl-1-piperazinylacetic acid and prolyl-4-piperidinylacetic acid derivatives as VLA-4 antagonists
Chiba, Jun,Takayama, Gensuke,Takashi, Tohru,Yokoyama, Mika,Nakayama, Atsushi,Baldwin, John J.,McDonald, Edward,Moriarty, Kevin J.,Sarko, Christopher R.,Saionz, Kurt W.,Swanson, Robert,Hussain, Zahid,Wong, Angela,MacHinaga, Nobuo
, p. 2725 - 2746 (2007/10/03)
A series of prolyl-1-piperazinylacetic acid and prolyl-4-piperidinylacetic acid derivatives were synthesized and evaluated for their activity as VLA-4 antagonists. Of 22 compounds synthesized, 19 compounds showed potent activity with low nanomolar IC50 values. In addition, the representative compounds 11o and 11p with a hydroxy group in the pyrrolidine ring showed moderate plasma clearance in rats (11o, 30 ml/min/kg and 11p, 21 ml/min/kg) and in dogs (11o, 12 ml/min/kg and 11p, 9 ml/min/kg).
BIOLOGICALLY ACTIVE COMPOUNDS
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Page 426, (2008/06/13)
Compounds of general formula (I) wherein: Z = CR3R4, where R3 and R4 are independently chosen from CO-7-alkyl P1 = CR5R6, P2 = O, CR7R8/sup
Synthesis of (2R,3R,4S)-2-hydroxymethylpyrrolidine-3,4-diol from (2S)-3,4-dehydroproline derivatives
Goli, Deepa M.,Cheesman, Bruce V.,Hassan, Mohamed E.,Lodaya, Rita,Slama, James T.
, p. 219 - 242 (2007/10/02)
(2R,3R,4S)-2-Hydroxymethylpyrrolidine-3,4-diol (1,4-dideoxy-1,4-imino-D-ribitol) was synthesized in five steps from N-protected (2S)-3,4-dehydroproline methyl esters.The stereoselective reaction of osmium tetraoxide with dehydroproline derivatives gave hi
The preparation of (S)-3,4-dehydroproline from (2S,4R)-4-hydroxyproline
Rueeger, Heinrich,Benn, M. H.
, p. 2918 - 2920 (2007/10/02)
(2S,4R)-N-benzyloxycarbonyl-4-tosyloxyproline methyl ester, readily prepared from commercially available (2S,4R)-N-benzyloxycarbonyl-4-hydroxyproline, was converted to (S)-3,4-dehydroproline of high enantiomeric purity by a process which involved a highly regioselective phenylselenoxide elimination to introduce the olefinic function.
