Azide-Free Synthesis of Oseltamivir
from <scp>l</scp>-Methionine
作者:Tadakatsu Mandai、Tetsuta Oshitari
DOI:10.1055/s-0028-1087940
日期:——
Highly enantioselective synthesis of oseltamivir has been achieved starting from l-methionine, in which Staudinger reaction is utilized for the alignment of three contiguous chiral centers of oseltamivir. The present method would lead to an alternative synthesis of oseltamivir that avoids the use of hazardous azide reagents.
Alpha-hydroxyarylbutanamine inhibitors of aspartyl protease
申请人:——
公开号:US20030207934A1
公开(公告)日:2003-11-06
Acylated &agr;-hydroxyarylbutanamines and related sulfonamides, ureas and carbamates that inhibit aspartyl protease are disclosed, as are methods of treating diseases, particularly HIV, using these compounds. The compounds have the formula:
1
A representative example is:
2
This invention relates to the compounds represented by a general formula [I]:
1
[in which A
1
and A
2
represent optionally fluorine-substituted methine or the like; B represents halogen, cyano, lower alkyl or the like; D represents optionally substituted heterocyclic group or the like; and G represents C
3
-C
20
aliphatic group such as alicyclic group]. These compounds inhibit nociceptin activities due to their high affinity to nociceptin receptor, and are useful as analgesic, antiobestic, corebral function improver, drugs for treatment of alzheimer's disease and dementia, remedies for schizophrenia and neurodegenerative diseases, antidepressant, remedies for diabetes insipidus, polyuria, hypotension and so on.
This invention relates to the compounds represented by a general formula [I]:
[in which A1 and A2 represent optionally fluorine-substituted methine or the like; B represents halogen, cyano, lower alkyl or the like; D represents optionally substituted heterocyclic group or the like; and G represents C3-C20 aliphatic group such as alicyclic group]. These compounds inhibit nociceptin activities due to their high affinity to nociceptin receptor, and are useful as analgesic, antiobestic, corebral function improver, drugs for treatment of alzheimer's disease and dementia, remedies for schizophrenia and neurodegenerative diseases, antidepressant, remedies for diabetes insipidus, polyuria, hypotension and so on.
Extensive SAR has been established in the alkoxy lactone series and this has lead to the discovery of DFP (5,5-dimethyl-3-(2-propoxy)-4-methanesulfonylphenyl)-2-(5H)-furanone), a potent COX-2 inhibitor exhibiting in vivo efficacy in all models studied. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.