13834-16-7Relevant academic research and scientific papers
Hydroxylation of (+)-menthol by Macrophomina phaseolina
Musharraf, Syed Ghulam,Ahmed, Muhammad Arif,Ali, Rahat Azher,Choudhary, Muhammad Iqbal
experimental part, p. 77 - 82 (2012/04/11)
Biotransformation of (+)-menthol with Macrophomina phaseolina led to hydroxylations at C-1, C-2, C-6, C-7, C-8 and C-9, with the C-8 position being preferentially oxidized. The resulting metabolites were identified as 8-hydroxymenthol (2), 6R-hydroxymenthol (3), 1R-hydroxymenthol (4), 9-hydroxymenthol (5), 2R,8-dihydroxymenthol (6), 8S,9-dihydroxymenthol (7), 6R,8-dihydroxymenthol (8), 1R,8-dihydroxymenthol (9) and 7,8-dihydroxymenthol (10). Metabolites 6-10 are described here for the first time. Their structures were characterized by spectroscopic analysis.
Enantioselective synthesis of three stereoisomers of 5,9- dimethylpentadecane, sex pheromone component of Leucoptera coffeella, from (-)-isopulegol
Moreira, Jardel A.,Correa, Arlene G.
, p. 3787 - 3795 (2007/10/03)
The coffee leaf miner, Leucoptera coffeella, is an economically important pest of coffee trees in Brazil. It has been demonstrated that the main sex pheromone component of this species is 5,9-dimethylpentadecane, however the stereochemistry of the natural
Enzyme-mediated preparation of enantiomerically pure p-menthan-3,9-diols and their use for the synthesis of natural p-menthane lactones and ethers
Serra, Stefano,Fuganti, Claudio
, p. 2489 - 2502 (2007/10/03)
The diastereoselective preparation of the p-menthane-3,9-diols (±)-12, (±)-13a, (±)-13b, and (±)-18 and the study of their enzymic resolution is described (Scheme 1). The corresponding enantiomer-enriched diols obtained by means of the lipase-mediated kinetic acetylation of the racemic diols are suitable synthetic precursors of many relevant p-menthane monoterpenes. Their usefulness is shown in the preparation of different natural products of this class that are interesting for industrial purposes because of their odor qualities, i.e., of the enantiomeric form of 3-hydroxy-p-menthan-9-oic acid lactone 1, of mintlactone 2, of the 3,9-epoxy-p-menth-1,8(10)-diene 10, and of the pheromone vesperal 11 (Schemes 2 and 3).
Enantiospecific syntheses of pseudopterosin aglycones. Part 2. Synthesis of pseudopterosin K-L aglycone and pseudopterosin A-F aglycone via a B→BA→BAC annulation strategy
Kocienski,Pontiroli,Qun
, p. 2356 - 2366 (2007/10/03)
The enantiomeric aglycones of pseudopterosins K-L and A-F are synthesised from (-)- and (+)-isopulegol respectively. Key features are (a) the construction of the C3 stereogenic centre by a directed epoxidation-reduction sequence (K-L); (b) the creation of
Calculated and experimental NMR chemical shifts of p-menthane-3,9-diols. A combination of molecular dynamics and quantum mechanics to determine the structure and the solvent effects
Casanovas,Namba,Leon,Aquino,Da Silva,Aleman
, p. 3775 - 3782 (2007/10/03)
NMR chemical shifts have been experimentally measured and theoretically estimated for all the carbon atoms of (1R,3S,4S,8S)-p-menthane-3,9-diol in chloroform solution. Theoretical estimations were performed using a combination of molecular dynamics simula
Synthesis and organoleptic properties of p-menthane lactones
Gaudin, Jean-Marc
, p. 4769 - 4776 (2007/10/03)
The stereoselective synthesis and organoleptic properties of p-menthane lactones 7a-h are described. Apart from correcting the published data concerning these compounds, this work has also allowed an unambiguous identification of 7a, 7b and 7g in Italo Mi
Pheromone syntheses: A tropical approach. Enantioselective synthesis of the (2R,6S,10S) and (2S,6S,10S) isomers of methyl 2,6,10-trimethyldodecanoate
Ferreira, J. Tercio B.,Zarbin, Paulo H. G.
, p. 381 - 388 (2007/10/03)
The enantioselective syntheses of two stereoisomers, (2R,6S,10S) and (2S,6S,10S), of methyl 2,6,10-trimethyldodecanoate, out of eight possible isomers, are described, employing the stereoselective hydroboration of (-)-isopulegol (2) and (+)-neo-isopulegol
A synthetic approach to the pseudopterosins
Gill, Simon,Kocienski, Philip,Kohler, Andrew,Pontiroli, Alessandro,Qun, Liu
, p. 1743 - 1744 (2007/10/03)
Three Lewis acid catalysed reactions used in a synthesis of the tricyclic core of the marine anti-inflammatory pseudopterosins are reported; the reductive cleavage of an oxirane with inversion, the cyclisation of an α-hydroxy ketenedithioacetal to an aren
Synthesis and Transformations of (+/-)-trans-4aβ(H),8aα(H)-Octahydro-4α,7β-dimethyl-2H-1-benzopyran-2-one
Sanghvi, Y. S.,Rao, A. S.
, p. 1377 - 1380 (2007/10/02)
Hydrogenation of 4,7-dimethylcoumarin (1) in alkaline medium has been shown to furnish a mixture of (+/-)-trans-4aβ(H),8aα(H)-octahydro-4α,7β-dimethyl-2H-1-benzopyran-2-one (2), (+/-)-trans-4aβ(H),8aα(H)-octahydro-4α,7α-dimethyl-2H-1-benzopyran-2-one (3)
