Category: 61302-99-6

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Okada, Yoshio; Tani, Shohei; Yawatari, Yuko; Yagyu, Masami researched the compound: D-Alanine methylamide hydrochloride( cas:61302-99-6 ).Recommanded Product: 61302-99-6.They published the article 《Synthesis of stereoisomeric alanine containing peptide derivatives》 about this compound( cas:61302-99-6 ) in Chemical & Pharmaceutical Bulletin. Keywords: alanine peptide stereoisomer; alanylalanine bactericide. We’ll tell you more about this compound (cas:61302-99-6).

D-alanine derivatives and their stereoisomers and D-alanyl-D-alanine derivatives and their stereoisomers (R1-Ala-R2, R1-Ala-Ala-R2: R1 = PhCH2O2C, H; R2 = NHNH2, NHCH3, NHCH2CH2OH) were synthesized. All compounds obtained did not show antibacterial activity against Staphylococcus aureus, Sarcina lutea, Pseudomonas aeruginosa and Escherichia coli.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: D-Alanine methylamide hydrochloride( cas:61302-99-6 ) is researched.Formula: C4H11ClN2O.Crisma, M.; Fasman, G. D.; Balaram, H.; Balaram, P. published the article 《Peptide models for β-turns. A circular dichroism study》 about this compound( cas:61302-99-6 ) in International Journal of Peptide & Protein Research. Keywords: peptide beta turn conformation CD. Let’s learn more about this compound (cas:61302-99-6).

The CD spectra of β-turn model peptides PhCH2O2C-Aib-Pro-Aib-Pro-OMe (I, Aib = NHCMe2CO), Piv-Pro-Aib-NHMe (II, Piv = Me3CCO), Piv-Pro-D-Ala-NHMe (III), and Piv-Pro-Val-NHMe (IV) were examined in methanol, hexafluoroisopropanol, and cyclohexane. Type I and Type II β-turns were observed for I and II, resp., in the solid state, while the Pro-D-Ala sequence adopts a Type II β-turn in a related peptide crystal structure. A class C spectrum was observed for I in various solvents, suggesting a variant of a Type I (III) structure. The Type II β-turn is characterized by a CD spectrum having two pos. CD bands at ∼230 nm and ∼202 nm, a feature observed in III in cyclohexane and methanol and for II in methanol. II exhibits solvent-dependent CD spectra, which may be rationalized by considering Type II, III and V reverse turn structures. IV adopts non-β-turn structures in polar solvents, but exhibits a class B spectrum in cyclohexane suggesting a population of Type I β-turns.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: D-Alanine methylamide hydrochloride(SMILESS: N[C@H](C)C(NC)=O.[H]Cl,cas:61302-99-6) is researched.SDS of cas: 15227-42-6. The article 《Synthesis of stereoisomeric alanine containing peptide derivatives》 in relation to this compound, is published in Chemical & Pharmaceutical Bulletin. Let’s take a look at the latest research on this compound (cas:61302-99-6).

D-alanine derivatives and their stereoisomers and D-alanyl-D-alanine derivatives and their stereoisomers (R1-Ala-R2, R1-Ala-Ala-R2: R1 = PhCH2O2C, H; R2 = NHNH2, NHCH3, NHCH2CH2OH) were synthesized. All compounds obtained did not show antibacterial activity against Staphylococcus aureus, Sarcina lutea, Pseudomonas aeruginosa and Escherichia coli.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Computed Properties of C4H11ClN2O. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: D-Alanine methylamide hydrochloride, is researched, Molecular C4H11ClN2O, CAS is 61302-99-6, about Peptide models for β-turns. A circular dichroism study. Author is Crisma, M.; Fasman, G. D.; Balaram, H.; Balaram, P..

The CD spectra of β-turn model peptides PhCH2O2C-Aib-Pro-Aib-Pro-OMe (I, Aib = NHCMe2CO), Piv-Pro-Aib-NHMe (II, Piv = Me3CCO), Piv-Pro-D-Ala-NHMe (III), and Piv-Pro-Val-NHMe (IV) were examined in methanol, hexafluoroisopropanol, and cyclohexane. Type I and Type II β-turns were observed for I and II, resp., in the solid state, while the Pro-D-Ala sequence adopts a Type II β-turn in a related peptide crystal structure. A class C spectrum was observed for I in various solvents, suggesting a variant of a Type I (III) structure. The Type II β-turn is characterized by a CD spectrum having two pos. CD bands at ∼230 nm and ∼202 nm, a feature observed in III in cyclohexane and methanol and for II in methanol. II exhibits solvent-dependent CD spectra, which may be rationalized by considering Type II, III and V reverse turn structures. IV adopts non-β-turn structures in polar solvents, but exhibits a class B spectrum in cyclohexane suggesting a population of Type I β-turns.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Electric Literature of C4H11ClN2O. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: D-Alanine methylamide hydrochloride, is researched, Molecular C4H11ClN2O, CAS is 61302-99-6, about New Amino Acids for the Topographical Control of Peptide Conformation: Synthesis of All the Isomers of α,β-Dimethylphenylalanine and α,β-Dimethyl-1,2,3,4-tetrahydroisoquinoline-3-carboxylic Acid of High Optical Purity.

The synthesis of all four diastereoisomers of α,β-dimethylphenylalanine, H2NCMe(CHMePh)CO2H, (4) as well as those of α,β-dimethyl-1,2,3,4,-tetrahydroisoquinoline-3-carboxylic acid (I and II) have been accomplished in high yield and high optical purity. Mol. mechanics calculations on the Nα-acetyl and N-methylcarboxamide derivatives of (3R,4R)-I and (3R,4S)-II indicate large and moderate energy stabilization for the gauche(-) but not the gauche(+) side-chain conformers of (3R,4S)-II and (3R,4R)-I, resp. By symmetry rules, the same holds for (3S,4R)-II and (3S,4S)-I, resp. Thus, these amino acids are potential building blocks for the topog. design of peptides (W. M. Kazmierski et al., 1991) by providing acylated 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid derivatives in which a gauche(-) and not a gauche(+) side-chain conformation is energetically more stable for the L-amino acid. Synthetic details and implications of these new amino acids for peptide and protein design are discussed.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Research Support, Non-U.S. Gov’t, Journal of Organic Chemistry called δ-Valerolactamic quaternary amino acid derivatives: Enantiodivergent synthesis and evidence for stereodifferentiated β-turn-inducing properties, Author is Zhang, Xiaofei; Ligny, Romain; Chewchanwuttiwong, Sopa; Hadade, Rawan; Laurent, Mathieu Y.; Martel, Arnaud; Jacquemmoz, Corentin; Lhoste, Jerome; Bricaud, Sullivan; Py, Sandrine; Dujardin, Gilles, which mentions a compound: 61302-99-6, SMILESS is N[C@H](C)C(NC)=O.[H]Cl, Molecular C4H11ClN2O, Product Details of 61302-99-6.

Enantiopure (R) and (S) cyclic α,α-disubstituted amino acid derivatives displaying a δ-valerolactam side chain were prepared from a common isoxazolidine precursor. The (R)-configured δ-valerolactam (I) was converted into diastereoisomeric pseudopeptides to investigate its ability to induce secondary structures in peptidomimetics. Conformational studies of these pseudopeptides were carried out in the solid state (X-ray diffraction), in solution (NMR analyses), and in silico (computer-aided conformational anal.), which demonstrated that such quaternary amino acids induce β-turn conformations stable enough to be retained in polar media (DMSO). Incorporation of this new type of α,α-disubstituted amino acid into a representative pseudopeptidic sequence by N- then C-elongation and N-debenzylation is also described herein and could serve for the synthesis of various structured peptidomimetics.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem