interactions. Other major structural features which influence the MDR-reversing activities of these compounds are a quinolinenitrogen atom and a basic nitrogen atom in piperazine. Furthermore, in highly active compounds, the distance between the hydrophobic moiety and the basic nitrogen atom (an atom connected to 2-hydroxypropoxyquinoline) must be at least 5 A. Several compounds were found to reverse
Novel inhibitor compounds specific of secreted non-pancreatic human a<sb>2</sb>phospholipase of group II
申请人:Heymans Francoise
公开号:US20050075345A1
公开(公告)日:2005-04-07
The present invention relates to a compound of the following formula (I) and pharmaceutical compositions containing the compound of formula (I):
wherein D, Y, A, B, p, q, W and R have the same meanings as defined in the specification.
ALKANOLAMINE, FRICTION-REDUCING AGENT, AND LUBRICATING OIL COMPOSITION
申请人:TOSOH CORPORATION
公开号:US20200039942A1
公开(公告)日:2020-02-06
To provide a friction-reducing agent containing no sulfur nor phosphorus and being excellent in friction-reducing properties, and a lubricating oil composition using it. An alkanolamine represented by the following formula is used as a friction-reducing agent:
wherein A
1
and A
2
are each independently a hydroxy group or a hydrogen atom, provided that A
1
and A
2
are not hydrogen atoms at the same time, R
1
is a hydrocarbon group having at most 30 carbon atoms, R
2
to R
6
are each independently a hydrogen atom or a hydrocarbon group having at most 30 carbon atoms, and m and n are each independently an integer of from 0 to 10.
Alkanolamine, friction-reducing agent, and lubricating oil composition
申请人:TOSOH CORPORATION
公开号:US10927084B2
公开(公告)日:2021-02-23
To provide a friction-reducing agent containing no sulfur nor phosphorus and being excellent in friction-reducing properties, and a lubricating oil composition using it. An alkanolamine represented by the following formula is used as a friction-reducing agent:
wherein A1 and A2 are each independently a hydroxy group or a hydrogen atom, provided that A1 and A2 are not hydrogen atoms at the same time, R1 is a hydrocarbon group having at most 30 carbon atoms, R2 to R6 are each independently a hydrogen atom or a hydrocarbon group having at most 30 carbon atoms, and m and n are each independently an integer of from 0 to 10.
Design of new potent and selective secretory phospholipase A2 inhibitors. Part 5: Synthesis and biological activity of 1-alkyl-4-[4,5-dihydro-1,2,4-[4H]-oxadiazol-5-one-3-ylmethylbenz-4′-yl(oyl)] piperazines
Among the different PLA(2)s identified to date, the group IIA secretory PLA(2) (sPLA(2) GIIA) is implied in diverse pathological conditions. In this work we describe the synthesis, inhibitory activities, and structure-activity relationships (SAR) of a new class of substituted piperazine derivatives. The in vitro fluorimetric assay using two groups of enzymes, GIB and GIIA, revealed several compounds as highly potent inhibitors (IC50 = 0.1 mu M). The in vivo activity assessed by ip or per os administration in a carrageenan-induced edema test in rats showed that two compounds proved to be as potent as indomethacin (10 mg/kg). (c) 2007 Elsevier Ltd. All rights reserved.