Properties and Reactions of Substituted 1,2-Thiazetidine 1,1-Dioxides: Chiral Mono- and Bicyclic 1,2-Thiazetidine 1,1-Dioxides fromα-Amino Acids
作者:Alexandra Meinzer、Andrea Breckel、Bassam Abu Thaher、Nico Manicone、Hans-Hartwig Otto
DOI:10.1002/hlca.200490021
日期:2004.1
New chiral mono- and bicyclic β-sultams, valuable building blocks for drug synthesis, have been prepared from L-Ala, L-Val, L-Leu, L-Ile, L-Phe, L-Cys, L-Ser, L-Thr, and D-penicillamine by transformation of the COOH group into a methylsulfonyl chloride function, followed by cyclization under basic conditions. Selected properties, derivatives, and reactions of the β-sultams are described.
The present invention relates compounds of formula (I)
wherein A and R
1
are as defined in the specification, pharmaceutical compositions comprising such compounds, and methods of treating conditions and disorders using such compounds and pharmaceutical compositions.
Disclosed herein are compounds of formula (I)
wherein Ring A and R
1
are as defined in the specification. Pharmaceutical compositions comprising such compounds, and methods for treating conditions and disorders using such compounds and pharmaceutical compositions are also disclosed.
The present invention relates to compounds of Formula (I),
or a form thereof, wherein ring A, R
1
, R
2
, R
3
, R
3
′, L, W, and V are as defined herein, useful as FLAP modulators. The invention also relates to pharmaceutical compositions comprising compounds of Formula (I). Methods of making and using the compounds of Formula (I) are also within the scope of the invention
Cobalt-catalyzed acceptorless dehydrogenative coupling of aminoalcohols with alcohols: direct access to pyrrole, pyridine and pyrazine derivatives
作者:Siba P. Midya、Vinod G. Landge、Manoj K. Sahoo、Jagannath Rana、Ekambaram Balaraman
DOI:10.1039/c7cc07427a
日期:——
example is reported of a new, molecularly defined SNS-cobalt(II) catalyst for the acceptorless dehydrogenative coupling (ADC) of unprotected amino alcohols with secondary alcohols leading to pyrrole and pyridinederivatives.