182210-00-0Relevant articles and documents
Identification of novel muscarinic M(3) selective antagonists with a conformationally restricted Hyp-Pro spacer.
Sagara, Yufu,Kimura, Toshifumi,Fujikawa, Toru,Noguchi, Kazuhito,Ohtake, Norikazu
, p. 57 - 60 (2003)
The identification of potent and selective muscarinic M(3) antagonists that are based on the recently discovered triphenylpropioamide derivative, 1, and have a unique amino acid spacer group is described. The introduction of a hydroxyproline-proline group to the spacer site and the use of a propyl or cyclopropylmethyl group as the piperidine N-substituent led to the discovery of the novel M(3) selective antagonists [8c, 8g; K(i)700-fold, M(2)/M(3)>180-fold], which have a more rigid structure than 1.
PYRAZOLE DERIVATIVES
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Paragraph 0152, (2013/04/23)
Disclosed are compounds of general formula (I), wherein R, R1, Rc, Rd, Re, Rf, X, Y, Z, A and B are as defined in the application.
PYRAZOLE DERIVATIVES
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Paragraph 0268, (2013/06/26)
Disclosed are compounds of general formula (I), wherein R, R1, Rc, Rd, Re, Rf, X, Y, Z, A and B are as defined in the application.
ORTHO PYRROLIDINE, BENZYL-SUBSTITUTED HETEROCYCLE CCR1 ANTAGONISTS FOR AUTOIMMUNE DISEASES and INFLAMMATION
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Page/Page column 39, (2009/04/24)
Compounds of the formula are disclosed. The compounds are CCR1 antagonists which are useful for the treatment and prevention of inflammatory and autoimmune diseases. Other embodiments are also disclosed.
Large nonlinear effect observed in the enantiomeric excess of proline in solution and that in the solid state
Hayashi, Yujiro,Matsuzawa, Masayoshi,Yamaguchi, Junichiro,Yonehara, Sayaka,Matsumoto, Yasunobu,Shoji, Mitsuru,Hashizume, Daisuke,Koshino, Hiroyuki
, p. 4593 - 4597 (2007/10/03)
(Chemical Equation Presented) A clue to the origin of chirality? A solution of proline with high enantiomeric excess (85-99% ee) was obtained from solid proline of only 10% ee through novel dissolution and crystallization processes (see scheme). This observation may be an explanation for the origin of chirality on Earth.
Identification of a novel 4-aminomethylpiperidine class of M3 muscarinic receptor antagonists and structural insight into their M3 selectivity
Sagara, Yufu,Sagara, Takeshi,Uchiyama, Minaho,Otsuki, Sachie,Kimura, Toshifumi,Fujikawa, Toru,Noguchi, Kazuhito,Ohtake, Norikazu
, p. 5653 - 5663 (2007/10/03)
Identification of a novel class of potent and highly selective M 3 muscarinic antagonists is described. First, the structure-activity relationship in the cationic amine core of our previously reported triphenylpropionamide class of M3 selective antagonists was explored by a small diamine library constructed in solid phase. This led to the identification of M3 antagonists with a novel piperidine pharmacophore and significantly improved subtype selectivity from a previously reported class. Successive modification on the terminal triphenylpropionamide part of the newly identified class gave 14a as a potent M3 selective antagonist that had > 100-fold selectivity versus the M1, M 2, M4, and M5 receptors (M3: K i = 0.30 nM, M1/M3 = 570-fold, M 2/M3 = 1600-fold, M4/M3 = 140-fold, M5/M3 = 12000-fold). The possible rationale for its extraordinarily higher subtype selectivity than reported M3 antagonists was hypothesized by sequence alignment of multiple muscarinic receptors and a computational docking of 14a into transmembrane domains of M3 receptors.
Enzyme-catalyzed enantiomeric resolution of N-Boc-proline as the key-step in an expeditious route towards RAMP
Kurokawa, Masayuki,Shindo, Takeyuki,Suzuki, Masumi,Nakajima, Nobuyoshi,Ishihara, Kohji,Sugai, Takeshi
, p. 1323 - 1333 (2007/10/03)
For the preparation of both enantiomers of N-carbamoyl-2-methoxymethylpyrrolidine, the precursors of Enders' chiral auxiliaries, SAMP and RAMP, enzyme-catalyzed kinetic resolution of racemic N-carbamoyl, N-Boc, N-Cbz proline esters and prolinols were examined. B. licheniformis protease (subtilisin) preferentially hydrolyzed the (R)-carbamoylproline ester with an enantiomeric ratio (E) of 10. To a hydrophobic N-Cbz proline ester, subtilisin showed lower selectivity (E=2.8), and in contrast, a purified protease (isozyme A) from the earthworm showed the preference of (S)-enantiomer (E=13.6). In a practical sense, C. antarctica lipase B (Chirazyme L-2) was effective for the hydrolysis of both N-Boc and N-Cbz derivatives with E >100. The e.e. of (R)-N-carbamoyl-2-methoxymethylpyrrolidine was raised to be >99.9% by recrystallization at the N-Boc-prolinol stage, which was derived from the (R)-N-Boc-proline methyl ester (98.7% e.e.) through a preparative-scale enzyme-catalyzed resolution (49% yield) of the racemic substrate.
Facile new method for preparation of optically active protected proline
Yamaguchi, Jun-Ichi,Ueki, Masaaki
, p. 621 - 622 (2007/10/03)
Treatment of L-N-protected 2-amino-5-bromopentanoic acid ester, which was prepared from protected L-glutamic acid, with sodium hydride in tetrahydrofuran (THF) proceeded to give the corresponding protected L-proline in high yield. On the other hand, the reaction of 2-aminobutyric acid derivative with sodium hydride gave the 1-aminocyclopropane-1-carboxylic acid derivative.