Synthesis of 5-deoxy-D,L-,ribo-hexofuranuronate derivatives via 7-oxanorbornanones
作者:Richard R. Schmidt、Christiane Beitzke、Andrew K. Forrest
DOI:10.1039/c39820000909
日期:——
Cycloaddition of α-acetoxyacrylonitrile with furan in a sealed tube yields a 7-oxanorborneen derivative which is easily transformed into two 2,3-O-isopropylidene-5-deoxy-D,L-ribo-hexofuranuronate derivatives.
Syntheses of (+)- and (-)-Methyl 8-Epinonactate and (+)- and (-)-Methyl Nonactate
作者:Aleksander Warm、Pierre Vogel
DOI:10.1002/hlca.19870700319
日期:1987.5.6
In four synthetic steps, (+)- and (–)-methyl 8-epinonactate ((+)- and (–)−4) have been derived from (+)- and (–)-7-oxabicyclo[2.2.1]heptan-2-one ((+)- and (–)−9), respectively. The (+)- and (–)-methyl nonactate ((+)- and (–)−3) were obtained from (+)- and (–)−4, respectively, by Mitsunobu displacement reactions. Optical resolution of (±)−9via chromatographic separation of the corresponding N-methy
Total Synthesis of the Gastroprotective Substance AI-77-B and of Analogues
作者:Jean-Marc Durgant、Pierre Vogel
DOI:10.1002/hlca.19930760116
日期:1993.2.10
(3S)-3-[(1′S)-1′-amino-3′-methylbutyl]-3,4-dihydro-8-hydroxyisocoumarin hydrochloride ((−)-2); the resulting mixtures of diastereoisomeric amides were transformed and separated to give the gastroprotectivesubstanceAI-77-B((−)-1) and analogues.
Compounds of the Formula I, II, III, VI and VII ##STR1## wherein the symbols have defined meanings are herbicides, plant growth regulators or intermediates thereof.