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161709-56-4

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161709-56-4 Usage

Uses

N-(1-Naphthalenylsulfonyl)-Ile-Trp-aldehyde is an inhibitor of cathepsin L.

Check Digit Verification of cas no

The CAS Registry Mumber 161709-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,7,0 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 161709-56:
(8*1)+(7*6)+(6*1)+(5*7)+(4*0)+(3*9)+(2*5)+(1*6)=134
134 % 10 = 4
So 161709-56-4 is a valid CAS Registry Number.

161709-56-4Downstream Products

161709-56-4Relevant articles and documents

Synthesis of peptide aldehyde derivatives as selective inhibitors of human cathepsin L and their inhibitory effect on bone resorption

Yasuma, Tsuneo,Oi, Satoru,Choh, Nobuo,Nomura, Toshiyuki,Furuyama, Naoki,Nishimura, Atsushi,Fujisawa, Yukio,Sohda, Takashi

, p. 4301 - 4308 (2007/10/03)

Cathepsin L, a lysosomal cysteine protease, is secreted by osteoclasts and participates in bone collagen degradation. In a search for cathepsin L inhibitors as antiosteoporotic agents, a series of peptide aldehyde derivatives were prepared by two synthetic approaches, DMSO oxidation of the corresponding alcohol derivatives and DIBAL-H reduction of the corresponding N,O-dimethylhydroxylamide derivatives, and evaluated for inhibitory activity against human cathepsin L and for inhibitory effects on bone resorption. Some of the peptide aldehyde derivatives including α-acylamino aldehyde derivatives showed potent activities. Among these compounds, N-(1- naphthalenylsulfonyl-L-isoleucyl-L-tryptophanal (12) was selected as a candidate for further investigation. Compound 12, a potent, selective, and reversible inhibitor of human cathepsin L with an IC50 of 1.9 nM, inhibited the release of Ca2+ and hydroxyproline from bone in in vitro bone culture system and also prevented bone loss in ovariectomized mice at an oral dose of 50 mg/kg.

DERIVATIVES OF L-TRYPTOPHANAL AND THEIR USE AS MEDICINALS

-

, (2008/06/13)

The present invention provides a cathepsin L inhibitor containing a compound of the formula: STR1 wherein R 1 is a hydrogen atom or an arylalkyl, heterocyclic-alkyl or lower alkyl group which may be substituted; R 2 and R 3 independently are a hydrogen at

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