23235-01-0 Usage
Chemical Properties
White powder
Enzyme inhibitor
This alkynyl amino acid and mechanism-based inhibitor (FW = 113.11 g/mol; CAS 23235-01-0), also known as (S)-2-amino-4-pentynoic acid, irreversibly inactivates γ-cystathionase (an enzyme that also catalyzes the synthesis of the metabolic signaling gas, H2S, See also Hydrogen Sulfide), acting as a Michael addition type suicide inhibitor of cystathionine γ-lyase, cystathionine γ-synthase, alanine aminotransferase, and methionine γ-lyase. Propargylglycine inactivates γ-cystathionase with pseudo-first-order kinetics and incorporation of 1 mol inhibitor per 80 kDa enzyme. When studied in vivo, inactivation of cystathionine γ-lyase in rat kidney was less than that in the liver, owing to the presence of a higher cysteine concentration in kidney. L-Propargylglycine was found to inactivate pig heart L-alanine transaminase (EC 2.6.1.2) at 37o C with a Ki = 3.9 mM, an observed maximal first order rate constant, kinact = 0.26 min–1, a minimal stoichiometric ratio necessary for inactivation of 2.7 L-propargylglycine molecules/enzyme subunit, with 2.2 molecules/subunit undergoing transamination before inactivation ensues. Experimental cystathioninuria, induced in rats by administration of D,L-propargylglycine, results in the formation of the cystathionine metabolites, cystathionine ketimine and perhydro-1,4-thiazepine-3,5-dicarboxylic acid, in various regions of the brain. L-Propargylglycine irreversibly inactivates proline dehydrogenase, which catalyzes the first step of proline catabolism, oxidizing proline to pyrroline-5-carboxylate. The 1.9-? resolution structure of the inactivated Thermus thermophilus enzyme shows that N5 of the flavin cofactor is covalently connected to the e-amino group of Lys-99 via a three-carbon linkage, consistent with the mass spectral analysis of the inactivated enzyme. The isoalloxazine ring has a butterfly angle of 25o, suggesting the cofactor is reduced. Two mechanisms, both involving oxidation to N-propargyliminoglycine, can account for these properties. L-Propargylglycine irreversibly inhibits L-amino acid oxidase from the venom of Crotalus adamanteus (Eastern diamondback rattlesnake) and Crotalus atrox (Western diamondback rattlesnake) in a dose- and timedependent manner that was blocked by the substrate L-phenylalanine. Other targets include methionineγ-lyase and UDP-Nacetylmuramate: L-alanine ligase, or L-alanine-adding enzyme, or UDP-Nacetylmuramoyl- L-alanine synthetase.
Purification Methods
The acid crystallises readily when ~4g in 50mL H2O are treated with absolute EtOH at 4o/3hours, and is collected, washed with cold absolute EtOH and Et2O and dried in a vacuum. Also, it recrystallises from aqueous Me2CO, RF on SiO2 TLC plates with n-BuOH/H2O/AcOH (4:1:1) is 0.26. The racemate has m 238-240o. [Leukart et al. Helv Chim Acta 59 2181 1976, Eberle & Zeller Helv Chim Acta 68 1880 1985, Jansen et al. Recl Trav Chim Pays-Bas 88 819 1969.] It is a suicide inhibitor of -cystathionase and other enzymes [Washtier & Abeles Biochemistry 16 2485 1977, Shinozuka et al. Eur J Biochem 124 377 1982].
Check Digit Verification of cas no
The CAS Registry Mumber 23235-01-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,2,3 and 5 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 23235-01:
(7*2)+(6*3)+(5*2)+(4*3)+(3*5)+(2*0)+(1*1)=70
70 % 10 = 0
So 23235-01-0 is a valid CAS Registry Number.
InChI:InChI=1/C5H7NO2/c1-2-3-4(6)5(7)8/h1,4H,3,6H2,(H,7,8)/t4-/m0/s1
23235-01-0Relevant articles and documents
Antimetabolites produced by microorganisms. II. L-2-amino-4-pentynoic acid.
Scannell,Pruess,Demny,Weiss,Williams
, p. 239 - 244 (1971)
-
A chiral amino acid preparation method
-
Paragraph 0042-0049, (2018/11/04)
The invention relates to a method for preparing a compound (OMLT-01). The method of the invention comprises the following steps: mixing the compound (OMLT-A) with liquor of sodium hydroxide in an amide solvent, cooling down to 0-10 DEG C, and dropwise add
Synthesis of ω-(hetero)arylalkynylated α-amino acid by sonogashira-type reactions in aqueous media
Brea, Roberto J.,Lopez-Deber, M. Pilar,Castedo, Luis,Granja, Juan R.
, p. 7870 - 7873 (2007/10/03)
(Chemical Equation Presented) Mild conditions are described that allow the palladium-catalyzed cross-coupling of Cα-alkynylated glycine with a wide variety of electron-rich and electron-poor aryl and heteroaryl halides in aqueous media.
