A new synthetic approach for functional triisopropoxyorganosilanes using molecular building blocks
摘要:
We report an efficient synthetic approach for well-designed organic-bridged alkoxysilanes, which allow the formation of highly functional organosilica hybrids under mild sol gel conditions. A series of molecular building blocks containing a triisopropoxysilyl group were synthesized and used in cross-coupling reactions. The triisopropoxysilyl group showed a good tolerance for various organic transformations. 1,4-Diketo-3,6-dithienylpyrrolo[3,4-c]pyrrole-bridged triisopropoxysilane was successfully prepared, allowing rapid formation of organosilica hybrid without loss of functionality under mildly acidic conditions. (C) 2013 Elsevier Ltd. All rights reserved.
Compounds having the formula I wherein
wherein R
1
, R
2
, R
3b
, R
4a
, R
4b
, R
4c
and as defined herein are Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for treating an HCV infection and inhibiting HCV replication.
The invention relates to novel aminomethyl benzene derivatives, their preparation and their use as pharmaceutically active compounds. Said compounds particularly act as immunomodulating agents.
本发明涉及新型氨甲基苯衍生物,其制备和作为药物活性化合物的用途。所述化合物特别作用为免疫调节剂。
Preparation of allylic aromatic compounds
申请人:NYCOMED IMAGING AS
公开号:EP1013636A1
公开(公告)日:2000-06-28
A process for the preparation of an allylic aromatic compound in which an aromatic amine is reacted first with a nitrite and then with an allylic olefin having an eliminatable terminal substituent. Novel allylic derivatives of disubstituted benzene compounds are also described.