Results 141 to 150 of about 8,638 (163)

Rates of Peptide Formation Involving Imino Acid Residues

Bulletin des Sociétés Chimiques Belges, 1984
AbstractThe determination of the rates for peptide coupling in tetrahydrofuran between Z‐Aaa‐OPcp (Aaa = Ala, (NMe)Ala, Pro, Thz, Pip and (S)Pip) and H‐Bbb‐OMe (Bbb = (NMe)Ala, Pro, Thz, Pip and (S)Pip) allowed us to evaluate the relative reactivities between these members, either as active components or as amino components.
Dirk P. M. Wante, Marc J. O. Anteunis
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Insecticidal imino acids in leaves of Calliandra

Biochemical Systematics and Ecology, 1984
Abstract Six amino acid components of the free amino acid pool of leaves of Calliendra species were tested for insticidal activity against a polyphagous herbivore Spodoptera frugiperda. Pipecolic acid, trans- 5-hydroxypipecolic acid, acetylaminopipecolic acid, trans-cis- 4,5-dihydroxypipecolic acid, trans-trans- 4,5 ...
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ChemInform Abstract: Broensted Acid Promoted Imino‐ene Reactions.

ChemInform, 2008
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Lindsey H. Oliver, Lauren A. Puls, Suzanne L. Tobey   +2 more
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?,??-imino dicarboxylic acids and some of their derivatives

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1958
Starting from the correspondingω-chloro carboxylic acids we preparedω,ω′ -imino dicarboxylic acids and their N- and O- derivatives; the products had the following structures:
A. N. Nesmeianov, E. I. Vasil'eva, R. Kh. Freidlina   +2 more
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A New Imino-Acid in some Liliaceae

Nature, 1955
LINKO and I1 isolated, last autumn, from Polygonatum officinale (and also from Convallaria majalis), a new imino-acid which on acid hydrolysis gave mostly homoserine. The elementary composition of the new compound corresponded to the formula (C4H7O2N)n and had [α]20D − 118.4° (in water).
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Raman spectra of imino acids and poly‐L‐hydroxyproline

Biopolymers, 1971
AbstractThe Raman spectra of poly‐L‐hydroxyproline in the solid state and aqueous solution have been obtained. From the spectra, the conformations of the polypeptide in the solid and aqueous solution are found to be the same. Major differences in the spectra between the solid and solution are traced to environmental influences of the pyrrolidine group ...
M J, Deveney, A G, Walton, J L, Koenig
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Thin-layer chromatography of imino-acids

Journal of Chromatography A, 1966
G, Blunden, S B, Challen
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Keto and imino acids in Delonix regia flowers

Phytochemistry, 1975
Abstract Floral parts and buds of Delonix regia contain α-ketoglutaric acid, oxaloacetic acid, pyruvic acid and glyoxylic acid. Proline and hydroxyproline biosynthesis has been demonstrated. The calyx and androecium accumulate glyoxylic acid, in amounts greater than those reported for other plants.
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Arylboronic acids. Imino derivatives from O-formylbenzeneboronic acid

The Journal of Organic Chemistry, 1968
Howard E. Dunn, Joseph C. Catlin, Harold R. Snyder   +2 more
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[Isomerism of imino acids in collagen peptides].

Biofizika, 1988
Trans/cis ratio of X-Hyp bonds in collagen peptides was determined by chemical shifts of C gamma Hyp in 13C. n. m. r. spectra. 44% of bonds in the cis form was found in human aortic collagen of the patient with idiotia. Probably, it was the result of molecular pathology of collagen during this disease.
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