منابع مشابه
l-Tyrosine isopropyl ester
The title compound, C(12)H(17)NO(3), adopts a folded conformation with a C-C(NH(2))-C(=O)-O torsion angle of -95.9 (2)°. In the crystal, mol-ecules are linked by an O-H⋯N hydrogen bond, forming helical chains along the b-axis direction. Weak N-H⋯O and C-H⋯O hydrogen bonds are observed between the chains.
متن کاملN-Acetyl-5-chloro-3-nitro-l-tyrosine ethyl ester
The title compound, C(13)H(15)ClN(2)O(6), was synthesized by hypochlorous acid-mediated chlorination of N-acetyl-3-nitro-l-tyrosine ethyl ester. The OH group forms an intra-molecular O-H⋯O hydrogen bond to the nitro group and the N-H group forms an inter-molecular N-H⋯O hydrogen bonds to an amide O atom, linking the mol-ecules into chains along [100]. The crystal studied was a non-merohedral tw...
متن کاملThe hydrolysis of carbobenzoxy-L-tyrosine p-nitrophenyl ester by various enzymes.
cY-Chymotrypsin rapidly catalyzes the release of p-nitrophenol from carbobenzoxy-n-tyrosine p-nitrophenyl ester and the reaction has been made the basis of a spectrophotometric assay requiring only millimicrogram quantities of the crystalline enzyme (1). Other nitrophenyl esters, e.g. of acetic acid (2), hydrocinnamic acid (3), and carbobenzoxyglycine (4) are also hydrolyzed by chymotrypsin des...
متن کاملCrystallization and structural studies of n-benzyloxycarbonyl-L- tyrosine-L-glycine-ethyl ester (Z-Tyr-Gly-OEt)
It is axiomatic that efficient crystal production reflects upon the quality of structure. An empirical relation for mass proportions of two solvents in crystallization of Z-Tyr-Gly-OEt shows a linear relationship. The dipeptide crystallizes in orthorhombic space group P212121, with cell parameters a=5.0680(1)Å, b=13.8650(1)Å and c=28.2630(1)Å, Z=4, Dcalc= 1.339Mg/m , μ=0.820mm-, F000=848, CuKα ...
متن کاملl-Serine methyl ester hydrochloride
In the enanti-opure crystal of the title compound, C(4)H(10)NO(3) (+)·Cl(-), inter-molecular O-H⋯Cl and N-H⋯Cl hydrogen bonds link the mol-ecules into layers parallel to (001).
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2012
ISSN: 1600-5368
DOI: 10.1107/s1600536812042377