Total synthesis of (.+-.)-actinidine and of (.+-.)-isooxyskytanthine
摘要:
Short syntheses of (+/-)-actinidine and of-(+/-)-isooxyskytanthine have been realized by photoreductive cyclization of N,N-unsaturated dialkyl-2-oxocyclopentanecarboxamides.
The reactions of diazo compounds with lactones. Part 2.† The reaction of cyclic 2-diazo-1,3-dicarbonyl compounds with diketene: benzofuran formation
作者:Paul V. Murphy、Timothy J. O’Sullivan、Bryan D. Kennedy、Niall W. A. Geraghty
DOI:10.1039/b001394n
日期:——
Cyclic 2-diazo-1,3-dicarbonyl compounds react with diketene in the presence of rhodium(II) salts to give benzofurans as the major isolated products. The formation of intermediate products with exocyclic double bonds which isomerise to benzofurans provides support for the proposed mechanism which involves initial formation of a dioxaspirooctenone by a formal dipolar cycloaddition reaction of a carbenoid to the exocyclic double bond of diketene followed by the loss of carbon dioxide. Acyclic 2-diazo-1,3-dicarbonyl compounds give furans in poor yield.
Photoreductive cyclization: Application to the total synthesis of (±)-actinidine
作者:J. Cossy、D. Belotti
DOI:10.1016/s0040-4039(00)82279-0
日期:——
A very short synthesis of (±)-actinidine is obtained by a photoreductive cyclization of a N, N-diallyl-2-oxocyclopentanecarboxamide.
通过N,N-二烯丙基-2-氧代环戊烷羧酰胺的光还原环化获得非常短的(±)-act啶合成。
Cunningham, Patrick D.; Geraghty, Niall W. A.; McArdle, Patrick J., Journal of the Chemical Society. Perkin transactions I, 1997, # 1, p. 1 - 4
作者:Cunningham, Patrick D.、Geraghty, Niall W. A.、McArdle, Patrick J.、Murphy, Paul V.、O'Sullivan, Timothy J.
DOI:——
日期:——
A short access to iridoid precursors
作者:J Cossy
DOI:10.1016/s0040-4039(00)99336-5
日期:1989.1
First efficient synthesis of iso-oxy-skytanthine
作者:J. Cossy、C. Leblanc
DOI:10.1016/0040-4039(91)80685-y
日期:1991.6
Starting from cyclohexan-1,3-dione, iso-oxy-skytanthine was synthetized via photoreductive cyclization of N-methyl, N-propargyl-2-oxocyclopentanecarboxamide.