CATIONIC LIPIDS FOR THERAPEUTIC AGENT DELIVERY FORMULATIONS
申请人:Niitsu Yoshiro
公开号:US20130022665A1
公开(公告)日:2013-01-24
Here described are compounds of formula I:
wherein R
1
and R
2
is independently selected from a group consisting of C
10
to C
18
alkyl, C
12
to C
18
alkenyl, and oleyl group; wherein R
3
and R
4
are independently selected from a group consisting of C
1
to C
6
alkyl, and C
2
to C
6
alkanol; wherein X is selected from a group consisting of —CH
2
—, —S—, and —O— or absent; wherein Y is selected from —(CH
2
)
n
—S(CH
2
)
n
, —O(CH
2
)
n
—, thiophene, —SO
2
(CH
2
)
n
—, and ester, wherein n=1-4; wherein a=1-4; wherein b=1-4; wherein c=1-4; and wherein Z is a counterion; as well as compositions and pharmaceutical formulations including compounds of formula I which are useful for the delivery of therapeutic agents; and methods of using these compositions and formulations.
Efficient copper-catalyzed Michael addition of acrylic derivatives with primary alcohols in the presence of base
作者:Feng Wang、Haijun Yang、Hua Fu、Zhichao Pei
DOI:10.1039/c2cc37595h
日期:——
A novel and efficient copper-catalyzed Michael addition of acrylic derivatives with primary alcohols in the presence of base has been developed. The protocol uses readily available acrylic derivatives and primary alcohols as the starting materials, inexpensive CuCl2 as the catalyst, and the corresponding addition products were obtained in moderate to excellent yields.