Ubenimex

Ubenimex

Names
IUPAC name (2S)-2-[[(2S,3R)-3-Amino-2-hydroxy-4-phenylbutanoyl]amino]-4-methylpentanoic acid
Other names Bestatin; N-[(2S,3R)-3-Amino-2-hydroxy-4-phenylbutyryl]-L-leucine
Identifiers
CAS Number	58970-76-6 65391-42-6 (HCl)
ChEMBL	ChEMBL29292 Y
ChemSpider	65145
Jmol 3D model	Interactive image
PubChem	72172
UNII	I0J33N5627 Y
InChI InChI=1S/C16H24N2O4/c1-10(2)8-13(16(21)22)18-15(20)14(19)12(17)9-11-6-4-3-5-7-11/h3-7,10,12-14,19H,8-9,17H2,1-2H3,(H,18,20)(H,21,22)/t12-,13+,14+/m1/s1 Key: VGGGPCQERPFHOB-RDBSUJKOSA-N InChI=1/C16H24N2O4/c1-10(2)8-13(16(21)22)18-15(20)14(19)12(17)9-11-6-4-3-5-7-11/h3-7,10,12-14,19H,8-9,17H2,1-2H3,(H,18,20)(H,21,22)/t12-,13+,14+/m1/s1 Key: VGGGPCQERPFHOB-RDBSUJKOBZ
SMILES CC(C)C[C@@H](C(=O)O)NC(=O)[C@H]([C@@H](CC1=CC=CC=C1)N)O
Properties
Chemical formula	C16H24N2O4
Molar mass	308.38 g·mol−1
Melting point	245 °C (473 °F; 518 K) (decomposes)
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Ubenimex (INN), also known more commonly as bestatin, is a competitive, reversible protease inhibitor. It is an inhibitor of arginyl aminopeptidase (aminopeptidase B), leukotriene A₄ hydrolase (a zinc metalloprotease that displays both epoxide hydrolase and aminopeptidase activities), alanyl aminopeptidase (aminopeptidase M/N), leucyl/cystinyl aminopeptidase (oxytocinase/vasopressinase), and membrane dipeptidase (leukotriene D₄ hydrolase). It is being studied for use in the treatment of acute myelocytic leukemia. It is derived from Streptomyces olivoreticuli. Ubenimex has been found to inhibit the enzymatic degradation of oxytocin, vasopressin, enkephalins, and various other peptides and compounds.

Crystal structure of ubenimex in the binding pocket of leukotriene A4 hydrolase. Rendered from PDB 1HS6.

See also

• Amastatin
• Pepstatin

External links

• The MEROPS online database for peptidases and their inhibitors: Bestatin