Convenient two-step syntheses of seselin and angelicin derivatives
作者:Raghao S. Mali、Nalini A. Pandhare、Milind D. Sindkhedkar
DOI:10.1016/0040-4039(95)01410-j
日期:1995.9
Convenient two-step approaches are described for the syntheses of seselin (3a), seselin and angelicin derivatives (3b–d and 5a–d) from 2,4-dihydroxybenzaldehyde (1a) and 2,4-dihydroxyacetophenone (1b) using tandem Claisen rearrangement and Wittig reaction.
Synthesis of (±)-phaseollin; a protective sequence for chromen double bonds
作者:Phillip Thomas、Donald A. Whiting
DOI:10.1016/s0040-4039(01)80112-x
日期:1984.1
USEFUL SYNTHESES OF PRENYLATED- AND PYRANO-3-ARYLCOUMARINS
作者:Raghao S. Mali、Priya P. Joshi
DOI:10.1081/scc-100105321
日期:2001.1
Convenient syntheses of 6-prenyl- and 8-isoprenyl-3-aryl-coumarins (7a-d and 8c-d) from 2-prenyloxy-4-methoxybenzaldehydes (5a and 5b) and of pyrano-3-arylcoumarins (10a-b) from 2-hydroxy-4-(1,1-dimethylpropynyloxy) benzaldehyde (9) using Wittig reaction are described.
Concise Modular Asymmetric Synthesis of Deguelin, Tephrosin and Investigation into Their Mode of Action
The concise nature and modularity of the synthesis described for deguelin and tephrosin (retrosynthetic analysis depicted) should facilitate access to labeled analogues to dissect the mechanism of action of this important pharmacophore.
A One-Pot Synthesis of Pyranocoumarins Through Microwave-Promoted Propargyl Claisen Rearrangement/Wittig Olefination
作者:Bernd Schmidt、Christiane Schultze
DOI:10.1002/ejoc.201701684
日期:2018.1.17
A method towards the synthesis of angular pyranocoumarins from propargylic ethers has been developed. The sequence proceeds through a microwave‐promoted tandem propargyl Claisen rearrangement, Wittigolefination, E/Z isomerization, and cyclization series of reactions in times as low as 10 min.