Results 131 to 140 of about 307,204 (387)

Large‐Scale Chemoenzymatic Synthesis of a Glycophorin A Tetrasaccharide Motif and Its Analogues

open access: yesAsian Journal of Organic Chemistry, EarlyView.
A large‐scale chemoenzymatic method was developed to synthesize natural and modified analogues of the Glycophorin A tetrasaccharide with either C9 or C5 terminal α‐2,3‐sialic acid variants. Selective α‐2,6‐sialylation of galactosamine was achieved by maintaining acetylation of the galactose during the course of enzymatic reactions. The products can aid
Ivan A. Gagarinov   +5 more
wiley   +1 more source

Synthesis of (−)‐8a‐epi‐Lentiginosine via Tsuji–Trost Reaction of d‐Glucose‐Derived Allylic Alcohols and Crystal Structure Analysis

open access: yesAsian Journal of Organic Chemistry, EarlyView.
A facile synthetic route to (−)‐8a‐epi‐lentiginosine from d‐glucose using the Pd‐BiPhePhos catalyzed intramolecular Tsuji–Trost reaction of non−derivatized allylic alcohol as a key construction of the hydroxylated pyrrolidine ring is reported. The crystal structure of (−)‐8a‐epi‐lentiginosne showed the envelope conformation of the five‐membered ring ...
Sunisa Akkarasamiyo   +3 more
wiley   +1 more source

STUDIES REGARDING THE CRIOPROTECTIVE PROPRIETIES OF THE VITRIFICATION MEDIA, WITH DMSO, SUCROSE, FICOLL 70 AND GALACTOSE USED IN EMBRYO CRYOPRESERVATION

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
The aim of our paper was to make a series of experiments in order to determine the concentration at which four cryoprotectants (DMSO, sucrose, Ficoll 70 and galactose) singly and in pairs would vitrify on plunging into liquid nitrogen and remain vitreous
ADA TELEA   +4 more
doaj  

Galactose:PEGamine coated gold nanoparticles adhere to filopodia and cause extrinsic apoptosis [PDF]

open access: yes, 2018
Ultra-small gold nanoparticles, surface functionalised with a 50:50 ratio of a thiolated α-Galactose derivative and a thiolated hexaethylene glycol amine, are toxic to HSC-3 oral squamous carcinoma cells.
Espinosa Garcia, Cristina   +3 more
core   +1 more source

4,6‐O‐Phenylboronic Ester Protection for 1,2‐cis‐α‐Selective Glucosylation

open access: yesAsian Journal of Organic Chemistry, EarlyView.
The 4,6‐O‐phenylboronic ester protection for 1,2‐cis‐α‐selective glucosylation, previously reported by the Crich group, was revisited and the stereodirecting effect of the cyclic protecting group was unveiled. 4,6‐O‐Phenylboronic ester‐protected glucosyl and 2‐azido‐2‐deoxyglucosyl donors exhibited higher α‐selectivity of the glucosylation than the ...
Yuta Umemura   +6 more
wiley   +1 more source

Validade e análise de sensibilidade dos coeficientes cinéticos do modelo matemático mecanístico proposto para predizer a cinética de hidrólise de lactose por β-galactosidase de células permeabilizadas de kluyveromyces lactis

open access: yesRevista do Instituto de Latícinios Cândido Tostes, 2008
Um modelo matemático mecanístico foi desenvolvido para descrever a hidrólise de lactose, levando em consideração o efeito de inibição por galactose. Foi utilizado um sistema dinâmico de equações diferenciais ordinárias da variação de lactose, glicose e ...
Edimar A . F. Fontes   +3 more
doaj  

Mutations In RAD27 Define A Potential Link Between G₁ Cyclins And DNA Replication [PDF]

open access: yes, 1995
The yeast Saccharomyces cerevisiae has three G1 cyclin (CLN) genes with overlapping functions. To analyze the functions of the various CLN genes, we examined mutations that result in lethality in conjunction with loss of cln1 and cln2.
Cross, Frederick R., , \u2778   +1 more
core   +1 more source

Identification of Galactose and Rhamnose in Birchwood and Aspenwood. [PDF]

open access: bronze, 1952
K. J. Björkqvist   +5 more
openalex   +1 more source

Advances on Albumin‐Based Carriers for Anticancer Drug Delivery

open access: yesAdvanced NanoBiomed Research, EarlyView.
This study systematically classifies the drug delivery modes of albumin by examining the characteristics of its surface‐active groups and internal binding sites. It provides an in‐depth analysis of various drug delivery strategies and their corresponding targeting mechanisms.
Ruoli Zhou   +4 more
wiley   +1 more source

Autoantibodies targeting galactose-deficient IgA1 associate with progression of IgA nephropathy.

open access: yesJournal of the American Society of Nephrology, 2012
Mesangial and circulating IgA1 with aberrantly glycosylated hinge region O-glycans characterize IgA nephropathy (IgAN). Unlike healthy individuals, some IgA1 is galactose deficient in patients with IgAN, leaving terminal N-acetylgalactosamine residues in
F. Berthoux   +8 more
semanticscholar   +1 more source

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