Chemoselective alkynylation of N-sulfonylamides versus amides and carbamates – Synthesis of tetrahydropyrazines
作者:Thomas Aubineau、Janine Cossy
DOI:10.1039/c3cc40529j
日期:——
The chemoselective alkynylation of N-sulfonylamides versus amides and carbamates using TMS-EBX as an alkynylatingagent leads to the formation of non-symmetrical tetrahydropyrazines from orthogonally protected diamines.
[EN] IRAK DEGRADERS AND USES THEREOF<br/>[FR] AGENTS DE DÉGRADATION D'IRAK ET LEURS UTILISATIONS
申请人:KYMERA THERAPEUTICS INC
公开号:WO2020264499A1
公开(公告)日:2020-12-30
The present invention provides compounds, compositions thereof, and methods of using the same. The compounds include an IRAK binding moiety capable of binding to IRAK4 and a degradation inducing moiety (DIM). The DIM could be DTM a ligase binding moiety (LBM) or lysine mimetic. The compounds could be useful as IRAK protein kinase inhibitors and applied to IRAK mediated disorders.
Efficient and expeditious chemoselective BOC protection of amines in catalyst and solvent-free media
作者:Balaga Viswanadham、Abdul S. Mahomed、Holger B. Friedrich、Sooboo Singh
DOI:10.1007/s11164-016-2702-9
日期:2017.3
A green and eco-friendly route for the almost quantitative BOC protection of a large variety of aliphatic and aromatic amines, amino acids, and amino alcohols is reported in catalyst and solvent-free media under mild reaction conditions. The products were confirmed by 1H, 13C NMR, IR spectroscopy, and in some cases, elemental analysis. This protocol does not require any water quenches, solvent separations
据报道,在温和的反应条件下,在无催化剂和无溶剂的介质中,绿色环保的路线几乎可以定量保护各种脂肪族和芳香族胺,氨基酸和氨基醇的BOC。产物通过1 H,13 C NMR,IR光谱和某些情况下的元素分析确认。该方案不需要任何水淬,溶剂分离和纯化步骤,例如重结晶和柱色谱法。
Sulfonamide as Photoinduced Hydrogen-Atom Transfer Catalyst for Regioselective Alkylation of C(sp<sup>3</sup>)–H Bonds Adjacent to Heteroatoms
Based on the DFT calculations, the sulfonamide was explored as an efficient hydrogen-atomtransfer catalyst for the C(sp3)–H alkylation. The combination of a metal-free photoredox catalyst and a sulfonamide catalyst enables highly regioselective alkylation of the C–H bonds adjacent to heteroatoms, which features broad substrate scope and excellent functional group compatibility. Remarkably, the sulfonamide
NOVEL MULTIMERIC CD40 LIGANDS, METHOD FOR PREPARING SAME AND USE THEREOF FOR PREPARING DRUGS
申请人:Guichard Gilles
公开号:US20100183642A1
公开(公告)日:2010-07-22
The invention concerns a compound of formula (I), wherein Y represents a macrocycle whereof the cycle comprises 9 to 36 atoms, and is functionalized by three amine or COOH functions; R
c
represents a group of formula H—X
a
—X
b
—X
c
—X
d
—X
e
—(X
f
)
i
—, wherein i represents 0 or 1, X
n
is in particular selected among lysine, arginine, ornithine residues, X
b
is in particular selected among glycine, asparagine, L-proline or D-proline residues, X
c
et X
d
are in particular selected among tyrosine, phenylalanine or 3-nitrotyrosine residues, X
e
et X
f
are in particular selected among the following amino acid residues: NH
2
—(CH
2
)
n
—COOH, n ranging from 1 to 10 or NH
2
—(CH
2
—CH
2
—O)
m
—CH
2
CH
2
COOH, m ranging from 3 to 6, provided that one at least of the amino acid residues X
a
, X
b
, X
c
and X
d
is different from the corresponding amino acid in the sequence of the natural CD40
143
Lys-Gly-Tyr-Tyr
146
fragment