PRECURSORS OF MIMOSINE IN MIMOSA PUDICA

1965 ◽  
Vol 43 (10) ◽  
pp. 1687-1691 ◽  
Author(s):  
H. P. Tiwari ◽  
Ian D. Spenser
Keyword(s):  
Succinic Acid ◽  
Side Chain ◽  
Glyceric Acid ◽  
Mimosa Pudica ◽  
Improved Method

In Mimosa pudica L. both L- and DL-lysine serve as specific precursors of the -γ-pyridone nucleus of mimosine. Succinic acid is also incorporated into the nucleus. Glycerol and glyceric acid enter the side chain of mimosine. An improved method for the isolation of mimosine from M. pudica is described.

Synthesis of chiral side-chain liquid crystalline polyacetylenes bearing succinic acid spacer

2011 ◽  
Vol 68 (3) ◽  
pp. 623-634 ◽  
Author(s):  
Kenichi Mizuta ◽  
Makoto Katashima ◽  
Tomokazu Koga ◽  
Kazuhiro Yamabuki ◽  
Kenjiro Onimura ◽  
...  
Keyword(s):  
Succinic Acid ◽  
Liquid Crystalline ◽  
Side Chain

Azoverdin -an Isopyoverdin

1996 ◽  
Vol 51 (11-12) ◽  
pp. 772-780 ◽  
Author(s):  
R Michalke ◽  
K Taraz ◽  
H Budzikiewiez
Keyword(s):  
Carboxylic Acid ◽  
Succinic Acid ◽  
Peptide Chain ◽  
Side Chain ◽  
Carboxyl Group ◽  
Amino Group ◽  
Present Evidence ◽  
N Terminus

For azoverdin, the siderophore of Azomonas macrocytogenes ATCC 12334, a pyoverdintype structure has been suggested. We now present evidence that it is actually an isopyoverdin. Also the sequence of the peptide chain has to be revised. Azoverdin comprises, therefore, the chromophore (3S)-5-amino-1,2-dihydro-8,9-dihydroxy-3H -pyrimido[1,2a]quinoline- 3-carboxylic acid whose amino group is bound to a succinamide residue while the carboxyl group is attached to the N -terminus of L-Hse-[2-(R-1-amino-3-hydroxypropyl)-3,4,5,6- tetrahydropyrimidine-65-carboxylic acid]-N5-acetyl-N5,-hydroxy-ᴅ-Orn-ᴅ-Ser-N5-acetyl-N5- hydroxy-ʟ-Orn. In addition to azoverdin congeners with succinic acid (azoverdin A ) and with ʟ-Glu (azoverdin G ), resp., instead of the succinamide side chain could be isolated.

scholarly journals The specificity of a 7 α-hydroxy steroid dehydrogenase from Escherichia coli

1976 ◽  
Vol 157 (1) ◽  
pp. 207-210 ◽  
Author(s):  
E S Haslewood ◽  
G A D Haslewood
Keyword(s):  
Escherichia Coli ◽  
Crude Enzyme ◽  
Hydroxyl Group ◽  
Side Chain ◽  
Improved Method ◽  
Hydroxy Steroid ◽  
Steroid Dehydrogenase

1. Thirty-eight steroids were tested as substrates for a 7 alpha-hydroxy steroid dehydrogenase preparation from a strain of Escherichia coli; an improved method of making the crude enzyme is described. 2. Steroids having a 7 alpha-hydroxyl group in the molecule were substrates except (a) when the 5 beta-cholan-24-oic acid side chain was shortened to less than four carbon atoms and (b) in certain cases when sulphate ester groups were present in the molecule. 3. For testing with the enzyme, a new specimen of 7 alpha-hydroxy-3,12-dioxo-5 beta-cholan-24-oic acid was made, which had properties different from those previously described.

An improved method for separating the kinetics of anisotropic and topographic gratings in side-chain azobenzene polyesters

2000 ◽  
Vol 70 (6) ◽  
pp. 803-807 ◽  
Author(s):  
M. Helgert ◽  
B. Fleck ◽  
L. Wenke ◽  
S. Hvilsted ◽  
P.S. Ramanujam
Keyword(s):  
Side Chain ◽  
Improved Method ◽  
Kinetics Of

A new two-dimensional folding sheet-like coordination polymer assembled from cadmium(II) and (S)-2-(benzylamino)succinic acid: synthesis, structure and properties

2021 ◽  
Vol 77 (12) ◽  
Author(s):  
Yan Liu ◽  
Hong-Tao Zhang
Keyword(s):  
Coordination Polymer ◽  
Succinic Acid ◽  
Title Compound ◽  
Blue Emission ◽  
Acid Synthesis ◽  
Side Chain ◽  
Solvothermal Reaction ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Carboxylate Groups

A new two-dimensional (2D) coordination polymer, namely, poly[[diaqua[μ3-(S)-2-(benzylamino)succinato-κ4 N,O 1:O 1′:O 4]cadmium(II)] monohydrate], {[Cd(C11H11NO4)(H2O)2]·H2O} n , has been synthesized by the solvothermal reaction of Cd(CH3COO)2·2H2O with the synthesized ligand (S)-2-(benzylamino)succinic acid (H2 L). The title compound has been structurally characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction analysis. In the crystal structure, each CdII cation binds to three carboxylate groups from three symmetry-related L 2− dianions. The tetradentate L 2− ligand links three symmetry-related CdII cations into a 2D folding sheet, which can be simplified as a uninodal (3,3)-connected hcb net with the point symbol (63). In the lattice, all the folding sheets are arranged in an interdigitated fashion and aggregate into zipper-like arrays through interlayer π–π interactions. The large and nonpolar side chain may play an important role in the formation and aggregation of the 2D sheet. The thermal stability and photoluminescence properties of the title compound were investigated, and it exhibits a blue emission with a quantum yield of 8%.

Microwave assisted fluorination: an improved method for side chain fluorination of substituted 1-arylethanones

Tetrahedron ◽  
2009 ◽  
Vol 65 (46) ◽  
pp. 9550-9556 ◽  
Author(s):  
Thor Håkon Krane Thvedt ◽  
Erik Fuglseth ◽  
Eirik Sundby ◽  
Bård Helge Hoff
Keyword(s):  
Side Chain ◽  
Improved Method ◽  
Microwave Assisted ◽  
Substituted 1

An Improved Method for the Degradation of the Lanosterol Side Chain

Synthesis ◽  
1975 ◽  
Vol 1975 (12) ◽  
pp. 795-796 ◽  
Author(s):  
Jean-Marie BERNASSAU ◽  
Marcel FÉTIZON
Keyword(s):  
Side Chain ◽  
Improved Method

ChemInform Abstract: Microwave-Assisted Fluorination: An Improved Method for Side Chain Fluorination of Substituted 1-Arylethanones.

ChemInform ◽  
2010 ◽  
Vol 41 (10) ◽  
Author(s):  
Thor Haakon Krane Thvedt ◽  
Erik Fuglseth ◽  
Eirik Sundby ◽  
Baard Helge Hoff
Keyword(s):  
Side Chain ◽  
Improved Method ◽  
Microwave Assisted ◽  
Substituted 1

scholarly journals Synthesis of side-chain liquid crystalline polyacetylenes bearing succinic acid spacer

2010 ◽  
Vol 43 (2) ◽  
pp. 141-146 ◽  
Author(s):  
Kenichi Mizuta ◽  
Noriyuki Hiraga ◽  
Tomokazu Koga ◽  
Kazuhiro Yamabuki ◽  
Kenjiro Onimura ◽  
...  
Keyword(s):  
Succinic Acid ◽  
Liquid Crystalline ◽  
Side Chain
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