An efficient procedure for the synthesis of formylacetic esters
摘要:
An efficient synthesis of formylacetic esters via ozonolysis of trans-beta-hydromuconic esters followed by a solid-supported triphenylphosphine reduction has been developed. In addition, an extension toward formylacetic amides and a one-pot preparation of more stable intermediates which can be used for further transformations are also described. (C) 2012 Elsevier Ltd. All rights reserved.
[EN] AGENTS FOR USE IN THE TREATMENT OF AMYLOIDOSIS<br/>[FR] AGENTS DESTINÉS À ÊTRE UTILISÉS DANS LE TRAITEMENT DE L'AMYLOÏDOSE
申请人:UCL BUSINESS PLC
公开号:WO2022058733A1
公开(公告)日:2022-03-24
The present invention relates to compounds for stabilising the native tetrameric form of transthyretin and protecting it from proteolytic cleavage; compounds for use in the prevention and treatment of transthyretin amyloidosis; and agents and medicaments comprising such compounds. The compounds are based on a general structure A-L-B, wherein A is a group of formula (II) or of formula (III): or of formula (IV) or of formula (V) B is a group of formula (III), (IV), or (V), or a group of formula (VI) or a group of formula –R10Z, wherein: Z is selected from -CO2R', -CONR'R'', -SO2R' wherein R' and R'' are independently H or C1-C4 alkyl; and R10 is a C1-C4 alkylene or alkenylene group; and L represents a linker group which is a saturated or unsaturated chain of 5 to 13 carbon atoms.
desymmetrizing hydroformylation of internal alkenes derivedfrom dihydromuconic acid is described. The study of this reaction afforded easy access to polyfunction aldehydes. After the evaluation of the reactivity of the dimethyl ester derivative with various primary amines, this methodology was used to design a rapid synthesis of (±)-vindeburnol from tryptamine in only two steps.
A new and unusually flexible route to cyclopentanoids synthesis of sarkomycin and prostaglandins
作者:Akihiro Misumi、Kyoji Furuta、Hisashi Yamamoto
DOI:10.1016/s0040-4039(00)99968-4
日期:1984.1
Combination of the dianion of dialky 3-hexenedioate and β-bromopropionate leads directly to a 2,3-disubstituted cyclopentanone, which can be transformed to a variety of primary prostaglandins and sarkomycin.
A modular route to nonracemic cyclo-NOBINs. Preparation of the parent ligand for homo- and heterogeneous catalysis
作者:Bruce H Lipshutz、D.J Buzard、Christina Olsson、Kevin Noson
DOI:10.1016/j.tet.2004.02.065
日期:2004.5
A sequence which combines a nonracemic tether, a naphthyl diol, and an aminonaphthol has been developed leading to the new ligand cyclo-NOBIN, which can easily be mounted onto polystyrene. Opportunities for extending the route to substituted cyclo-NOBINs are also discussed. (C) 2004 Elsevier Ltd. All rights reserved.
Tartrate-like ligands in the asymmetric epoxidation
作者:Christopher J. Burns、Cheryl A. Martin、K. Barry Sharpless