Compounds having the formula
are antagonists of leukotrienes and inhibitors of their biosynthesis. These compounds are useful as anti-asthmatic, anti-allergic, anti-inflammatory, and cytoprotective agents.
这些化合物可用作抗哮喘、抗过敏、抗炎和细胞保护剂。
Milne, Jacqueline E.; Kocienski, Philip J., Synthesis, 2003, # 4, p. 584 - 592
作者:Milne, Jacqueline E.、Kocienski, Philip J.
DOI:——
日期:——
A Synthesis of 6-Tributylstannyl-3,4-dihydro-2H-pyrans via Coupling of Enol Triflates with (Bu3Sn)(Bu)CuLi·LiCN
作者:Tanya Wildman、Philip J. Kocienski、Robert Narquizian、William G. Whittingham
DOI:10.1055/s-2002-20041
日期:——
Enoltriflates derived from 6- and 7-membered ring lactones (6 cases) react with (Bu 3 Sn)(Bu)CuLi.LiCN in THF at -78°C to give the corresponding α-tributylstannyl cyclic enol ethers in 54-85% yield.
The Preparation of 6-Bromo-3,4-dihydro-2H-pyrans from Tetrahydropyran-2-ones via a Ni(0)-catalysed Coupling Reaction and their Halogen-metal Exchange to 6-Lithio-3,4-dihydro-2H-pyrans.
作者:Jacqueline E. Milne、Krzysztof Jarowicki、Philip J. Kocienski
DOI:10.1055/s-2002-22698
日期:——
tetrahydropyran-2-ones undergo Ni(0)-catalysed substitution with LiBr to give the corresponding 6-bromo-3,4-dihydro-2H-pyr-ans under mild conditions. The 6-bromo-3,4-dihydro-2H-pyrans undergo halogen-metalexchange with tert-butyllithium to give the corresponding 6-lithio-3,4-dihydro-2H-pyrans.