Stericallyhindered aminoarylboranes featuring atropisomerism about the C-B bond were prepared by addition of organomagnesium species onto readily accessible dialkylamine-borane complexes. Some of these aminoarylboranes, isosteres of vinyl styrene derivatives, were resolved by HPLC on the chiral stationary phase. They are the first examples of a non-biaryl type system which display slow rotation about
The invention provides novel nucleoside compounds of formula I wherein R
1
, R
2a
, R
2b
, R
3
, R
4
, R
5
, R
6
, R
8a
, R
9
and R
10
are as defined herein which are useful for the treatment of Hepatitis C Virus (HCV) mediated diseases. The invention further provides methods for treatment or prophylaxis of HCV mediated diseases with compounds of formula I and pharmaceutical compositions comprising these compounds,
The synthesis of 1-halonaphthalenes by the Cu-catalyzed benzannulation reaction of 2-(phenylethynyl)benzaldehyde and alkynes in the presence of the halogen reagents such as NBS, NCS, and NIS, was developed. This protocol afforded various type of 1-halonaphthalenes in moderate to excellent yields and the cross coupling reactions of 1-bromo-2-phenylnaphthalene prepared by this method with various reagents
10A-AZALIDE COMPOUND CROSSLINKED AT 10A- AND 12-POSITIONS
申请人:Sugimoto Tomohiro
公开号:US20110237784A1
公开(公告)日:2011-09-29
A novel 10a-azalide compound crosslinked at the 10a- and 12-positions, which is represented by the following formula, and is effective on even
Hemophilus influenzae
, or erythromycin resistant bacteria (e.g., resistant pneumococci and streptococci).
The present invention relates N-(aromatic, 6-membered, fused, (hetero)aryl-methylene)-N-cycloalkyl carboxamide derivatives, their thiocarboxamide or N-substituted carboximidamide analogues, all of formula (I) wherein A represents a carbo-linked 5-membered heterocyclyl group; T represents O, S, N—R
c
, N—OR
d
, N—NR
c
R
d
or N—CN; Z
1
to Z
3
and B represents an aromatic, 6-membered, fused, (hetero)aryl; their process of preparation; their use as fungicide active agents, particularly in the form of fungicide compositions and methods for the control of phytopathogenic fungi, notably of plants, using these compounds or compositions.