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Synthetic approaches to naturally occurring ten-membered-ring lactones
(Georg Thieme Verlag Kg, 2007-11-02)
The strategies for the synthesis of naturally occurring ten-mernbered-ring lactones, which are the most abundant of the medium-ring lactones, are discussed. According to their structures and/or biosynthesis, the molecules ...
Natural occurrence, biological activities and synthesis of eight-, nine-, and eleven-membered ring lactones
(Sociedade Brasileira de Química, 2008)
The natural occurrence, biological activities and synthetic approaches to natural eight-, nine-, and eleven-membered lactones is reviewed. These medium ring lactones are grouped according to ring size, and their syntheses ...
Natural occurrence, biological activities and synthesis of eight-, nine-, and eleven-membered ring lactones
(Sociedade Brasileira de Química, 2008-01-01)
The natural occurrence, biological activities and synthetic approaches to natural eight-, nine-, and eleven-membered lactones is reviewed. These medium ring lactones are grouped according to ring size, and their syntheses ...
Estudo das condições reacionais da reação de clivagem oxidativa de β-hidróxi éteres bicíclicos promovida por tetróxido de rutênio
(Sociedade Brasileira de Química, 2010-01-01)
A systematic study of the reaction of β-hydroxy ethers with ruthenium tetraoxide (RuO4), generated in situ from ruthenium trichloride and sodium periodate, is presented, leading to nine-membered ring keto-lactones in ...
Estudo das condições reacionais da reação de clivagem oxidativa de β-hidróxi éteres bicíclicos promovida por tetróxido de rutênio
(Sociedade Brasileira de Química, 2010)
A systematic study of the reaction of β-hydroxy ethers with ruthenium tetraoxide (RuO4), generated in situ from ruthenium trichloride and sodium periodate, is presented, leading to nine-membered ring keto-lactones in ...
Helivypolide G. A novel dimeric bioactive sesquiterpene lactone
(2004-08-23)
Helivypolide G was isolated from leaves of Helianthus annuus L. cv. Stella. In the course of our ongoing research for new allelochemicals from Helianthus annuus, a novel dimeric bioactive sesquiterpene lactone, helivypolide ...
Helivypolide G. A novel dimeric bioactive sesquiterpene lactone
(2004-08-23)
Helivypolide G was isolated from leaves of Helianthus annuus L. cv. Stella. In the course of our ongoing research for new allelochemicals from Helianthus annuus, a novel dimeric bioactive sesquiterpene lactone, helivypolide ...
Iodine(III)-promoted ring expansion of 1-vinylcycloalkanol derivatives: A metal-free approach toward seven-membered rings
(AMER CHEMICAL SOC, 2008)
A versatile and metal-free approach for the synthesis of molecules bearing seven- and eight-membered rings is described. The strategy is based on the ring expansion of 1-vinylcycloalkanols (or the corresponding silyl or ...