A compound represented by the general formula:
wherein Ring A is a C
6-14
aryl group or the like, L is —NR
L
CO— or the like (wherein R
L
is a hydrogen atom or the like), Ring B is a C
6-14
aryl group or the like, X is a C
1-3
alkylene group or the like, Y is a C
1-3
alkylene group or the like, Z is an oxygen atom or the like, R
1
and R
2
are each independently a hydrogen atom or the like, and R
3
, R
4
, R
5
and R
6
are independently a hydrogen atom, a halogen atom or the like, or a pharmaceutically acceptable salt thereof, or a solvate thereof, has an Aβ production inhibitory effect or a BACE1 inhibitory effect and is useful as a therapeutic agent for a neurodegenerative disease caused by Aβ and typified by Alzheimer-type dementia.
Cornforth–Evans Transition States in Stereocontrolled Allylborations of Epoxy Aldehydes
作者:Robert R. A. Freund、Matthias Borg、Daniel Gaissmaier、Robin Schlosser、Timo Jacob、Hans‐Dieter Arndt
DOI:10.1002/chem.202001479
日期:2020.7.14
(CE) model for alkoxy‐ and epoxy‐substitutedaldehydes. CE‐type transition states were uniformly identified as minima in advanced, DFT‐based computational studies of allylboration reactions of epoxy aldehydes, conforming well to the experimental data, and highlighting the underestimated relevance of this model. Furthermore, a mechanism‐based rationale for the substitution pattern of the epoxide was delineated
Stereoselective total synthesis of parthenolides indicates target selectivity for tubulin carboxypeptidase activity
作者:Robert R. A. Freund、Philipp Gobrecht、Zhigang Rao、Jana Gerstmeier、Robin Schlosser、Helmar Görls、Oliver Werz、Dietmar Fischer、Hans-Dieter Arndt
DOI:10.1039/c9sc01473j
日期:——
aldehydes was established to enable stereoselective access to α-(exo)-methylene γ-butyrolactones under mild conditions. Acid-labile functionality and chiral carbonyl compounds are tolerated. Excellent asymmetric induction was observed for β,β′-disubstituted α,β-epoxy aldehydes. These findings led to the enantioselective total synthesis of the sesquiterpene natural product (−)-parthenolide, its unnatural
Compounds and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula I,
as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
A compound represented by the general formula:
wherein Ring A is a C6-14 aryl group or the like, L is —NRLCO— or the like (wherein RL is a hydrogen atom or the like), Ring B is a C6-14 aryl group or the like, X is a C1-3 alkylene group or the like, Y is a C1-3 alkylene group or the like, Z is an oxygen atom or the like, R1 and R2 are each independently a hydrogen atom or the like, and R3, R4, R5 and R6 are independently a hydrogen atom, a halogen atom or the like, or a pharmaceutically acceptable salt thereof, or a solvate thereof, has an Aβ production inhibitory effect or a BACE1 inhibitory effect and is useful as a therapeutic agent for a neurodegenerative disease caused by Aβ and typified by Alzheimer-type dementia.