Construction of Polyheterocyclic Benzopyran Library with Diverse Core Skeletons through Diversity-Oriented Synthesis Pathway: Part II
作者:Mingyan Zhu、Byung Joon Lim、Minseob Koh、Seung Bum Park
DOI:10.1021/co2001907
日期:2012.2.13
diversity-oriented synthesis of polyheterocyclic small-molecule library with privileged benzopyran substructure. To ensure the synthetic efficiency, we utilized the solid-phaseparallel platform and the fluorous-tag-based solution-phase parallel platform to construct a 284-member polyheterocyclic library with six distinct coreskeletons with an average purity of 87% on a scale of 5–10 mg. This library was designed
[EN] TYROSINE LIGATION PROCESS<br/>[FR] PROCÉDÉ DE LIGATURE DE LA TYROSINE
申请人:NOVARTIS AG
公开号:WO2013009564A1
公开(公告)日:2013-01-17
A process is provided for preparing a conjugate of Formula (I-A) or (I) comprising a polypeptide (or a protein) containing n number of tyrosine units, where n is an integer greater than or equal to 1, dispersed within the amino acid chain having an amino terminus end (A1) and an acid terminus end (A2) of the protein or polypeptide (either the amino or acid terminus end can be the at least one tyrosine unit) and having a weight average molecular weight equal to or greater than 10,000 Daltons (10 kDa), wherein the conjugate comprises a number m of tyrosine conjugates (modified tyrosine residues) as depicted in Formula (I-A) or (I), where m is at least one and is less than or equal to n: where X, Lg, L and R are as defined herein.
Facile and Stabile Linkages through Tyrosine: Bioconjugation Strategies with the Tyrosine-Click Reaction
作者:Hitoshi Ban、Masanobu Nagano、Julia Gavrilyuk、Wataru Hakamata、Tsubasa Inokuma、Carlos F. Barbas
DOI:10.1021/bc300665t
日期:2013.4.17
The scope, chemoselectivity, and utility of the click-like tyrosine labeling reaction with 4-phenyl-3H-1,2,4-triazoline-3,5(4H)-diones (PTADs) is reported. To study the utility and chemoselectivity of PTAD derivatives in peptide and protein chemistry, we synthesized PTAD derivatives possessing azide, alkyne, and ketone groups and studied their reactions with amino acid derivatives and peptides of increasing
BETULIN DERIVED COMPOUNDS USEFUL AS ANTIPROTOZOAL AGENTS
申请人:Yli-Kauhaluoma Jari
公开号:US20100190795A1
公开(公告)日:2010-07-29
The invention relates to betulin derivatives, and to the use thereof as agents against protozoa of the genus
Leishmania
and against leishmaniasis in applications of pharmaceutical industry.
QUANTITATIVE ANALYSIS OF VITAMIN D3, VITAMIN D2, AND METABOLITES THEREOF
申请人:DEY Subhakar
公开号:US20110183429A1
公开(公告)日:2011-07-28
Quantification of vitamin D2, vitamin D3, and the monohydroxy and diihydroxy metabolites of vitamin D2 and vitamin D3, can comprise labeling analytes with mass spectrometry (MS) tagging reagents and performing LC-MSMS analysis of the labeled analytes. The labeled analytes can include a labeled standard and can have distinct retention times on a reversed phase column, as well as distinct masses. Under high energy collisions, reporter groups can be generated. The intensity or the peak area detected for each reporter group can be used for quantitation. In some embodiments, a one-step tagging reagent is used that is a dienophile-containing, labeled Diels Alder reagent.