SHEA, K. J.;LEASE, TIMOTHY G.;ZILLER, JOSEPH W., J. AMER. CHEM. SOC., 112,(1990) N3, C. 8627-8629
作者:SHEA, K. J.、LEASE, TIMOTHY G.、ZILLER, JOSEPH W.
DOI:——
日期:——
The type 2 intramolecular imino Diels-Alder reaction. Synthesis and structural characterization of bicyclo[n.3.1] bridgehead olefin/bridgehead lactams
作者:Timothy G. Lease、K. J. Shea
DOI:10.1021/ja00059a022
日期:1993.3
for the synthesis of a homologous series of bridgehead olefin-bridgehead lactams. The X-ray crystal structures of three members of this series, including the highly strained 2-carbomethoxy-8-oxo-2-azabicyclo[3.3.1]non-4-ene, were obtained. An analysis of the structural data permits evaluation of the response of the bridgehead double bond and bridgeheadamide linkages to similar torsional distorsions
2 型亚氨基 Diels-Alder 环加成反应用于合成同系列的桥头烯烃-桥头内酰胺。获得了该系列的三个成员的 X 射线晶体结构,包括高度应变的 2-carbomethoxy-8-oxo-2-azabicyclo[3.3.1]non-4-ene。对结构数据的分析允许评估桥头双键和桥头酰胺键对类似扭转变形的响应
Synthesis and x-ray crystal structure of a highly strained anti-Bredt olefin/anti-Bredt lactam. exo-2-Carbomethoxy-1-aza-8-oxobicyclo[3.3.1]non-4-ene
作者:K. J. Shea、Timothy G. Lease、Joseph W. Ziller
DOI:10.1021/ja00179a082
日期:1990.11
We synthesized the heptapeptide Leu-Arg-Arg-Cys-Cys-Leu-Gly and subsequently oxidized it to the intramolecular disulfide analogue, Leu-Arg-Arg-Cys⇔Cys-Leu-Gly (1) (where Cys⇔Cys represents a Cys-Cys dyad connected via both a peptide and disulfide bond). The intramolecular disulfide is a potent electrophile, resulting in the rapid inactivation of the cAMP-dependent protein kinase