511-59-1Relevant academic research and scientific papers
A SESQUITERPENOID ANT REPELLENT FROM DYSOXYLUM SPECTABILE
Russell, Graeme B.,Hunt, Martin B.,Bowers, William S.,Blunt, John B.
, p. 1455 - 1456 (1994)
(2S,3R)-2,3-Dimethyl-3-(4-methyl-3-pentenyl)-2-norbornanol was isolated as the ant repellent in an activity guided separation of the fruits of Dysoxylum spectabile.The structure of the alcohol was established by NMR.Other sesquiterpenes were recognized in a GCMS analysis of the steam distillate.
ASYMMETRIC DIELS-ALDER REACTION OF A CHIRAL ALLENIC ESTER: ENANTIOSELECTIVE SYNTHESIS OF (-)-β-SANTALENE
Oppolzer, Wolfgang,Chapuis, Christian
, p. 4665 - 4668 (1983)
The Lewis-acid promoted Diels-Alder reaction of the allenic ester 10 provides the adduct 11 with excellent ?-facial selection leading to an efficient enantioselective synthesis of (-)-β-santalene and to the recovery of the chiral control element 7.
Diastereo- and enantio-controlled synthesis of sandalwood constituents (-)-β-santalene and (+)-epi-β-santalene starting from the same (+)-norcamphor
Saito, Masanori,Kawamura, Mitsuhiro,Ogasawara, Kunio
, p. 9003 - 9006 (2007/10/02)
(-)-β-Santalene and (+)-epi-β-santalene, both occurring in East Indian sandalwood oil and having an enantiomeric core bicyclo[2.2.1]heptane framework, have been synthesized in diastereo- and enantio-controlled manner starting from the same (+)-norcamphor.
Site-Selective Rhodium(II) Acetate Mediated Intramolecular Metal-Carbene Insertions into C-H Bonds of Bicycloheptanes: Efficient Syntheses of (+)-Albene and (-)-β-Santalene
Sonawane, Harikisan R.,Bellur, Nanjundiah S.,Ahuja, Jaimala R.,Kulkarni, Dilip G.
, p. 1434 - 1439 (2007/10/02)
Treatment of α-diazo ketones 1a-d and 2a-d with catalytic amounts of rhodium(II) acetate led to selective carbene insertions into C-H bonds resulting in cyclopentane-annulated products in high yields.The highly selective insertion realized into the exo-methyl C-H bond of 1a has been utilized in the syntheses of (+)-albene (8) and (-)-β-santalene (11).
Total Syntheses of Sandalwood Fragrances: (Z)- and (E)-β-Santalol and Their Enantiomers, ent-β-Santalene
Krotz, Achim,Helmchen, Guenter
, p. 537 - 540 (2007/10/02)
Via asymmetric Diels-Alder reactions, large scale preparations of enantiomerically pure norbornane-2-carboxylic acids were carried out.Oxidative degradation furnished 2-norbornanone and 3-methyl-2-norbornanone which gave the title compounds via stereoselective alkylations, subsequent Wittig reactions and reductions.
221. Asymmetric Diels-Alder Reactions of Neopentyl-Ether-Shielded Acrylates and Allenic Esters: Syntheses of (-)-Norbornenone and (-)-β-Santalene
Oppolzer, Wolfgang,Chapuis, Christian,Dupuis, Dominique,Guo, Maodao
, p. 2100 - 2114 (2007/10/02)
Starting from (+)- or (-)-camphor, the antipodal alcohols 14 and 18, respectively, have been prepared; the corresponding acrylates 15 and 19 underwent TiCl2(i-PrO)2-mediated Diels-Alder additions to cyclopentadiene to give adducts 20a and 22a respectively, with 95percent endo- and 99.2percent ?-face selectivities.Adduct 22a was converted to enentiomerically pure norbornenone 26.Addition of 1,3-butadiene to acrylate 15 in the presence of TiCl4 afforded 3-cyclohexenyl carboxylate 29 with > 95.6percent stereodifferentiation.The TiCl2(i-PrO)2-promoted cycloaddition of cyclopentadiene to allenic ester 43 proceeding with 99percent face differentiation served as the key step for an efficient enantioselective synthesis of (-)-β-santalene ((-)-41) with concomitant recovery of the chiral control alcohol 14.
IDENTIFICATION OF TRANS-β-SANTALOL AND EPI-CIS-β-SANTALOL IN EAST INDIAN SANDALWOOD OIL
Christenson, Philip A.,Secord, Norman,Willis, Brian J.
, p. 1139 - 1141 (2007/10/02)
An analysis of East Indian sandalwood oil (Santalum album) has resulted in the isolation and identification of trans-β-santalol and epi-cis-β-santalol.Key Word Index- Santalum album; Santalaceae; East Indian sandalwood oil; trans-β-santalol; epi-cis-β-santalol.
Terpenes and Terpene Derivatives, XI. - Synthesis and Reductions of β-Santalenone hept-2-yl)-3-penten-2-one>
Simmross, Frank-Michael,Weyerstahl, Peter
, p. 1089 - 1099 (2007/10/02)
Starting from cyclopentadiene (2) and 2-butynoic acid (3), and via the acids 5 and 7, the allyl alcohol 9 has been prepared. 9 reacts with the dienol ether 10 to give β-santalenone 11.Reduction of 11 with LiAlH4/AlCl3 yields, depending on the reaction temperature various amounts of hydrocarbons 25, 26, and β-santalenone (1), of the ketone 27 and of the alcohol 28.With NaBH4 the alcohols 28 and 29 have been obtained.
