Synthesis of a key intermediate for the total synthesis of pseudopteroxazole
作者:J.S. Yadav、E. Vijaya Bhasker、P. Srihari
DOI:10.1016/j.tet.2010.01.054
日期:2010.3
A facile synthesis of a key intermediate for the totalsynthesis of anti-mycobacterial compound pseudopteroxazole is described employing an intramolecular Diels–Alder cyclization and an iodine-mediated oxidative aromatization step.
Stereochemistry-Activity Relationships in Olfaction. Odorants containing a proton donor/proton acceptor unit
作者:G�nther Ohloff、Wolfgang Giersch
DOI:10.1002/hlca.19800630109
日期:1980.1.23
A novel class of odorants is described where the odor is associated with the interaction of two functional groups, one being an H-donor (AH function), and the other an H-acceptor (B function). Generally, odor occurs only if the distance between the two structural elements (AH/B system) is less than 3 Å. Bifunctional derivatives of the p-menthane and iridane series served as models for deriving this
Stereoselectivity of the reduction of carvone and dihydrocarvone by suspension cells of Nicotiana tabacum
作者:Toshifumi Hirata、Hiroki Hamada、Tadashi Aoki、Takayuki Suga
DOI:10.1016/0031-9422(82)85179-0
日期:——
Abstract The biotransformation of foreign substrates with suspensioncells of Nicotianatabacum was tested with (4 R )-(−)- and (4 S )-(+)-carvones, (
摘要 用 (4 R )-(-)- 和 (4 S )-(+)-香芹酮测试了烟草悬浮细胞对外来底物的生物转化,(
Organic reactions in a solid matrix-VII sodium on alumina : A convenient reagent for reduction of ketones, esters and oximes
作者:Satendra Singh、Sukh Dev
DOI:10.1016/s0040-4020(01)80249-0
日期:1993.1
Sodium dispersed on alumina is described and evaluated as a convenient off-the-shelf reagent (in a wax-coated form) for reduction of ketones, esters and oximes. While isopropanol is the preferred proton donor for the reduction of ketones and oximes, t-butanol is the alcohol of choice for the reduction of esters.
Tetracarbonylhydridoferrate was found to be effective for the selective reduction of α,β-unsaturated carbonyl compounds to the corresponding saturated alcohols. The reactions proceeded stereospecifically and (−)- and (+)-neodihydrocarveol were obtained exclusively from (+)- and (−)-carvone respectively. The reaction mechanism is briefly discussed.