Novel generation of conjugated alkynyl ketenes: Efficient synthesis of β,γ-alkynyl lactones
作者:Plato A. Magriotis、Dionisios Vourloumis、Mary E. Scott、Anna Tarli
DOI:10.1016/s0040-4039(00)60348-9
日期:1993.3
New methodology for the synthesis of certain β,γ-alkynyl lactones is described based on the in situ generation of ω-hydroxy alkynyl ketenes from 1-tert-butoxy-1,3-diynes which are prepared by oxidative coupling of terminal alkynes with tert-butoxyacetylene.
The synthesis and chemistry of a simplified, functional analogue of neocarzinostatin chromophore: identification of an intramolecular 1,5-hydrogen atom
作者:Paul A. Wender、Mark J. Tebbe
DOI:10.1016/s0040-4020(01)80627-x
日期:1994.1
The synthesis and chemistry of a monocyclic analogue of neocarzinostatin chromophore are described. This analogue is activated through a Michael addition process and provides cycloaromatized products similar to those obtained in the activation of neocarzinostatin chromophore. Mechanistic studies on this analogue have led to the first identification of a diyl self-quenching pathway based on a 1,5-hydrogen atom transfer that provides a novel hypothesis about the relationship between thiol structure and DNA single and double strand cleavage selectivity for neocarzinostatin chromophore and diyl-based cleaving agents.
Studies on DNA cleaving agents: synthesis and chemically induced cycloaromatization of a monocyclic neocarzinostatin chromophore analogue
作者:Paul A. Wender、Mark J. Tebbe
DOI:10.1016/s0040-4039(00)93481-6
日期:1991.9
The synthesis of an acyclic analogue of neocarzinostatin chromophore is described. This analogue is found to undergo cycloaromatization in the presence of thiols; the process involves a previously undetected internal hydrogen abstraction reaction.
A new route to 10-membered ring analogues of neocarzinostatin chromophore
作者:Thomas Wehlage、Adolf Krebs、Thorsten Link
DOI:10.1016/s0040-4039(00)97131-4
日期:1990.1
Studies on DNA - active agents: The synthesis of the parent carbocyclic subunit of neocarzinostatin chromophore A
作者:Paul A. Wender、Michael Harmata、David Jeffrey、Chisato Mukai、Jean Suffert