Synthesis of optically active macrolides bearing di- and triethylene glycol and dicarboxylic acid hydrazide moieties from (-)-α-pinene
作者:M. P. Yakovleva、G. R. Mingaleeva、K. S. Denisova、G. Yu. Ishmuratov
DOI:10.1007/s11172-019-2575-3
日期:2019.7
Six optically active macroheterocycles bearing ester and dihydrazide moieties were synthesized from available natural (-)-α-pinene through the intermediate keto acid, (31R,33R)- 1-hydroxy-32,32-dimethyl-1,4-dioxopentaphane, using the [2+1] reaction of this keto acid with di- or triethyleneglycols and the [1+1] condensation of the resulting α,ω-diketo diesters with dicarboxylic acid dihydrazides in
[EN] USE OF DYNAMIC MIXTURES FOR A CONTROLLED RELEASE OF FRAGRANCES<br/>[FR] UTILISATION DE MELANGES DYNAMIQUES POUR LIBERATION CONTROLEE DE FRAGRANCES
申请人:FIRMENICH & CIE
公开号:WO2006016248A1
公开(公告)日:2006-02-16
The present invention relates to a delivery system in the form of a dynamic mixture obtained by reacting together, in the presence of water, at least one hydrazine derivative with at least one perfuming, flavoring, insect repellent or attractant, bactericide and/or fungicide aldehyde or ketone. The invention's mixture is capable of releasing in a controlled and prolonged manner said aldehyde or ketone in the surrounding environment. Furthermore, the present invention concerns also the use of said dynamic mixtures as perfuming ingredients as well as the perfuming compositions or perfumed articles comprising the invention's mixtures.
Synthesis of novel enantiomerically pure tetra-carbohydrazide cyclophane macrocycles
作者:Hany F. Nour、Nadim Hourani、Nikolai Kuhnert
DOI:10.1039/c2ob25171j
日期:——
A total of twelve novelenantiomericallypure tetra-carbohydrazide cyclophane macrocycles have been synthesised in quantitative yields by reacting chiral (4R,5R)- and (4S,5S)-1,3-dioxolane-4,5-dicarbohydrazides with aromatic bis-aldehydes in a [2 + 2]-cyclocondensation reaction. The compounds show a dynamic behaviour in solution, which has been rationalized in terms of an unprecedented conformational
Two chiral structuralisomers have been synthesized by molecular engineering of L-tartaric acid. In the presence of LiOH isomer forms a thermally stable, fluorescent gel which exhibits interesting nano-cluster morphology, anomalous optical and rheological properties whilst forms a non-fluorescent solution under similar conditions. The current-voltage (I-V) curve followed a non-linear trend, rationally
Synthesis of optically active macrolides with hydrazide fragments from tetrahydropyran and L-(+)-tartaric acid derivatives
作者:G. Yu. Ishmuratov、M. P. Yakovleva、G. R. Mingaleeva、M. A. Shutova、R. R. Muslukhov、E. M. Vyrypaev、A. G. Tolstikov
DOI:10.1007/s10600-013-0708-8
日期:2013.9
The synthesis of two potentially useful optically active 23- and 30-membered macrolides containing a 1,2-diol system and dihydrazide fragments was developed starting from tetrahydropyran. It was based on [1+1]-condensation of 7-oxooctyl-7-oxooctanoate and bis(7-oxooctyl)hexanedioate with L-(+)-tartaricacid hydrazide.