Synthesis of Oxygen-Containing Medium and Large Rings using One-Pot Combinations of Sequential Alkene, Enyne and Alkyne Metathesis Reactions
作者:Elisabetta Groaz、Donatella Banti、Michael North
DOI:10.1002/adsc.200600444
日期:2007.1.8
containing alkynes which subsequently undergo alkene and enyne metathesisreactions when treated with first or second generation Grubbs’ catalysts. Both Grubbs’ catalysts are shown to be compatible with the reagents and conditions used for the molybdenum alkynemetathesis catalyst, thus allowing the two catalysts to be used in a one-pot process involving alkyne, enyne and alkenemetathesis transformations
Scaffolded bis-azasugars: A dual warhead approach to glycosidase inhibition
作者:Brian A. Johns、Carl R. Johnson
DOI:10.1016/s0040-4039(97)10616-5
日期:1998.2
Double Suzuki coupling was achieved with vinyl bromide 7, synthesized from the bromobenzene microbial oxidation metabolite bromocyclohexadienediol 6 and alpha,omega-diborane coupling partners derived from the hydroboration of the corresponding diene. Ozonolysis and selective reduction protocols served to provide selectively the aia or pip tethered polyhydroxylated piperidine ring systems (bis-azabugars). The C-8 linked DMJ analogue 1 showed inhibitory activity against glycosidase enzymes. (C) 1998 Elsevier Science Ltd. All rights reserved.
Catalytic Ring-Closing Metathesis of Dienes: Application to the Synthesis of Eight-Membered Rings
作者:Scott J. Miller、Soong-Hoon Kim、Zhong-Ren Chen、Robert H. Grubbs