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Showing 1 to 20 of 4155 for “"Beta"”.
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Beta'-Lithiation of Alpha, Beta-Unsaturated Amides
The novel (beta)'-lithiation of (alpha)-alkyl-(alpha),(beta)-unsaturated secondary and tertiary amides is reported. N-Methyl-1-cyclohexenecarboxamide and N-methyl-1-cyclopentenecarboxamide are metalated at nitrogen and at the (beta)'-carbon with either sec-butyllithium/TMEDA at -78(DEGREES)C or …
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Delta-Hydroxy-beta,beta-disubstituierte-beta-Aminosäuren: asymmetrische Synthese und Überführung in Dipeptide
… thesis describes a pathway for the synthesis of beta-mono- and beta-disubstituted delta-hydroxy-beta-amino acids having three contiguous stereogenic centers and the conversion of these molecules to dipeptides. The advantages of the herein described synthetic strategy relies on the extended …
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Substitution Reactions of Cis-Dichloro-(beta,beta',beta'')-Triaminotriethylamine)-Cobalt(iii) Complex Ion
Made available in DSpace on 2014-12-05T19:37:29Z (GMT). No. of bitstreams: 1 6003953.pdf: 4161047 bytes, checksum: 290e9a66806b7d8d89b7fa4cd72e66a7 (MD5) Previous issue date: 1960
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Asymmetrische Synthese von Beta-Aminosulfonaten, Beta-Sultamen und Gamma-Sultonen
An efficient asymmetric synthesis of beta-amino-cyclohexyl sulfonates, beta-sultams and gamma-sultones has been developed. The key step of the synthesis is the Lewis acid (zinkbromide) catalyzed aza-Michael addition of the enantiopure hydrazines (S)-1-amino-2-methoxymethyl-pyrrolidine (SAMP) or …
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A Comparative Study of Inductive Influence on the Hydrolysis of Beta-Thioglucopyranosides by Beta-Thioglucosidase and Beta-Glucosidase
A series of phenyl-D-thioglucopyranosides were prepared and characterized in order to determine the absolute specificity of the .B-thioglucosidase and B-glucosidese enzyme systems toward the th1oglucosidic bond. The specificity of B-glucosidase of almond emulsin toward oxygen linkage seems to be …
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Efficacy of beta-hydroxy-beta-methylbutyrate (HMB) supplementation in hemodialysis patients
… to combat these co-morbidities are needed. Beta-hydroxy-beta-methylbutyrate (HMB) is a metabolite of the amino acid leucine that has been shown to improve lean mass and physical function in the elderly and clinical populations, but had not previously been studied in MHD patients. …
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The design and structural characterization of oligomeric beta beta alpha mini-proteins
Oligomeric mini-proteins, short peptides with protein-like features, constitute valuable minimal models for the study of oligomeric proteins. Oligomerization is a common feature of cellular proteins that may confer structural and functional advantages. Oligomerization is proposed to have arisen by …
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Phosphorylation and activation of transforming growth factor beta (TGF-[beta]) receptor kinases
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1996.
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Phoswich beta-gamma spectroscopy
Call number: LD2668 .T4 NE 1987 M66
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Beta-ensembles with covariance
This thesis presents analytic samplers for the [beta]-Wishart and [beta]-MANOVA ensembles with diagonal covariance. These generalize the [beta]-ensembles of Dumitriu-Edelman, Lippert, Killip-Nenciu, Forrester-Rains, and Edelman-Sutton, as well as the classical [beta] = 1, 2,4 ensembles of James, …
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Synthesis and reactivity of alpha-thio-beta-chloroacrylamides and alpha-thio-beta-chloroenones
Development of novel synthetic methodology for selective transformation of organic compounds is a central element underpinning organic synthesis with control of chemo-, regio- and stereoselectivity a very high priority. Reactions which can be conducted under mild reaction conditions and, ideally in …
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The Conjugate Addition of Tert-Butylmagnesium Chloride to Cinnamaldehyde and (alpha,beta,beta)-Triphenylacrylophenone
Made available in DSpace on 2014-12-05T19:36:06Z (GMT). No. of bitstreams: 1 0010499.pdf: 2579209 bytes, checksum: 2516bb918e9ae0fefbae2cbb360eb855 (MD5) Previous issue date: 1954
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Higgs pair production in [beta][beta][tau][tau] final states at the HL-LHC
… of standard model Higgs pair production in [beta][beta][tau][tau] final states at the High Luminosity LHC is investigated. Higgs pair production can be used to measure the Higgs trilinear coupling constant, which uniquely determines the shape of the Higgs potential. The doubly hadronic, …
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