A simple synthesis of acetyl and propionyl cyclododecanes
摘要:
1-Formyl-4,8-cyclododecadiene, obtained by hydroformylation of 1,5,9-cyclododecatriene, reacts with MeMgHal or EtMgHal to give 1-(1'hydroxyethyl)- or 1-(1'-hydroxypropyl)-4,8-cyclododecadiene, respectively. The hydrogenation of their double bonds and subsequent oxidation of the resulting alcohols afford, in high yields, acetyl- or propionylcyclododecane, respectively.
New 1-acyl- and 1-hydroxymethyl-cyclododecanes and -cyclododecenes. The new 1-acyl-cyclododecenes and -cyclododecanes are obtained by a Rupe or Meyer-Schuster rearrangement, with or without subsequent hydrogenation in the presence of Ni, Pd and Pt catalysts. The 1-acyl-cyclododecenes and -cyclododecanes are valuable scents of the basic type of the sought-after macrocyclic musk scents. Furthermore, they are used for the manufacture of numerous other new 1-substituted or 1-and 2-substituted cyclododecenes and cyclododecanes having good scent characteristics.
[EN] CYCLIC PEPTIDE COMPOUNDS AND RELATED METHODS, SALTS AND COMPOSITIONS<br/>[FR] COMPOSÉS DE PEPTIDES CYCLIQUES ET PROCÉDÉS, SELS ET COMPOSITIONS ASSOCIÉS
申请人:MERCK SHARP & DOHME
公开号:WO2015172047A1
公开(公告)日:2015-11-12
This invention relates to compounds useful in the preparation of lipopeptides and related methods of preparing and using these compounds.
本发明涉及在制备脂肽和相关方法中有用的化合物,以及制备和使用这些化合物的相关方法。
NOVEL ANTIBACTERIAL AGENTS FOR THE TREATMENT OF GRAM POSITIVE INFECTIONS
申请人:Metcalf, III Chester A.
公开号:US20140073558A1
公开(公告)日:2014-03-13
The present invention relates to novel lipopeptide compounds, pharmaceutical compositions of these compounds and methods of using these compounds as antibacterial compounds. The compounds of the invention are particularly useful against a variety of bacteria, including resistant strains. The compounds are useful as antibacterial agents against
Clostridium difficile.
A direct acetylation of inert C(sp3)–H bonds was developed that was catalyzed by decatungstate under visible light irradiation and was followed by radical addition–disassociation with phenylsulfonyl ethanone oxime. The reaction displays site-selectivity in multiple C(sp3)–H bonds without prefunctionalization and directing groups. Various functional groups are well-tolerated and natural molecules are