A compound represented by the general formula (I):
a pharmaceutically acceptable salt thereof, or a solvate of the compound or salt has an Aβ production inhibitory activity or BACE 1 inhibitory activity, and is thus useful as an agent for treating neurodegenerative diseases caused by Aβ as typified by Alzheimer's disease. In the formula, ring A represents a C
6-14
aryl group or the like; L represents —NR
1
CO— (wherein R
L
represents a hydrogen atom or the like) or the like; ring B represents a C
6-14
aryl group or the like; X represents a C
1-3
alkylene group or the like; Y represents a C
1-3
alkylene group or the like; Z represents an oxygen atom or the like; R
1
and R
2
each independently represents a hydrogen atom or the like; and R
3
, R
4
, R
5
and R
6
each independently represents a hydrogen atom, a halogen atom or the like.
Metal-Catalyzed Rearrangement of Homoallylic Ethers to Silylmethyl Allylic Silanes in the Presence of a Di-<i>tert</i>-butylsilylene Source
作者:Pamela A. Cleary、K. A. Woerpel
DOI:10.1021/ol052456x
日期:2005.11.1
transfer to gem-disubstituted alkenes to form silacyclopropanes, we discovered an unprecedented reaction of homoallylic ethers. When silylene transfer was performed at room temperature or above, two di-tert-butylsilylene units were incorporated into the molecule, and complete rearrangement of the carbon backbone occurred. This report describes the scope of this unique reaction as well as the mechanistic