Experimental and theoretical studies of the [3,3]-sigmatropic rearrangement of prenyl azides
作者:Exequiel O. J. Porta、Margarita M. Vallejos、Andrea B. J. Bracca、Guillermo R. Labadie
DOI:10.1039/c7ra09759j
日期:——
[3,3]-Sigmatropic rearrangement of isoprenyl azides has been extensively investigated in an experimental and theoretical level. Prenylazides with different chain lengths and phenyl prenylazide have been synthesized. NMR analysis of each azide has been made to determine the equilibrium composition, showing the predominance of primary allyl azides over the tertiary ones and E over Z isomer, regardless
catalytic azidation of primary, secondary, and tertiary allylic alcohols has been developed. This new azidation reaction affords the corresponding allylic azides in high to excellent yields and regioselectivities. The reaction provides straightforward access to allylic azides that are valuable intermediates in organic synthesis, including the preparation of primary amines or 1,2,3-triazole derivatives
PHARMACEUTICAL COMPOSITION FOR TREATMENT OF ALZHEIMER'S DISEASE
申请人:Shionogi&Co., Ltd.
公开号:EP2151435A1
公开(公告)日:2010-02-10
A pharmaceutical composition for treating Alzheimer's disease containing a compound represented by the general formula (I):
wherein ring A is an optionally substituted carbocyclic group or an optionally substituted heterocyclic group;
E is lower alkylene, etc.;
X is S, O, or NR1;
R1 is a hydrogen atom or lower alkyl;
R2a, R2b, R3a, R3b, R4a and R4b are each independently a hydrogen atom, halogen, hydroxy, etc.;
n and m are each independently an integer of 0 to 3;
n+m is an integer of 1 to 3; and
R5 is a hydrogen atom, optionally substituted lower alkyl, etc.;
its pharmaceutically acceptable salt, or a solvate thereof as an active ingredient.
一种治疗阿尔茨海默病的药物组合物,含有通式 (I) 所代表的化合物:
其中环 A 是任选取代的碳环基团或任选取代的杂环基团;
E 是低级亚烷基等
X 是 S、O 或 NR1;
R1 是氢原子或低级烷基;
R2a、R2b、R3a、R3b、R4a 和 R4b 各自独立地为氢原子、卤素、羟基等;
n 和 m 各自独立地为 0 至 3 的整数;
n+m 是 1 至 3 的整数;以及
R5 是氢原子、任选取代的低级烷基等;
其药学上可接受的盐或其溶液作为活性成分。
AMINODIHYDROTHIAZINE DERIVATIVE
申请人:Shionogi Co., Ltd.
公开号:EP1942105B1
公开(公告)日:2014-04-16
AMINODIHYDROTHIAZINE DERIVATIVES
申请人:Kobayashi Naotake
公开号:US20090082560A1
公开(公告)日:2009-03-26
A composition having BACE 1 inhibitory activity containing a compound represented by the general formula (I):
wherein ring A is an optionally substituted carbocyclic group or an optionally substituted heterocyclic group;
E is lower alkylene;
X is S, O, or NR
1
;
R
1
is a hydrogen atom or lower alkyl;
R
2a
, R
2b
, R
3a
, R
3b
, R
4a
and R
4b
is each independently a hydrogen atom, halogen, or hydroxy etc.;
n and m are each independently an integer of 0 to 3;
n+m is an integer of 0 to 3;
R
5
is a hydrogen atom or substituted lower alkyl;
its pharmaceutically acceptable salt, or a solvate thereof.