Novel S1P1 Receptor Agonists - Part 2: From Bicyclo[3.1.0]hexane-Fused Thiophenes to Isobutyl Substituted Thiophenes
摘要:
Previously, we reported on the discovery of a novel series of bicyclo[3.1.0]hexane fused thiophene derivatives that serve as potent and selective S1P(1), receptor agonists. Here, we discuss our efforts to simplify the bicyclohexane fused thiophene head. In a first step the bicyclohexane moiety could be replaced by a simpler, less rigid cyclohexane ring without compromising the SIP receptor affinity profile of these novel compounds. In a second step, the thiophene head was simplified even further by replacing the cyclohexane ring with an isobutyl group attached either to position 4 or position S of the thiophene. These structurally much simpler headgroups again furnished potent and selective S1P(1) agonists (e.g., 87), which efficiently and dose dependently reduced the number of circulating lymphocytes upon oral administration to male Wistar rats. For several compounds discussed in this report lymphatic transport is an important route of absorption that may offer opportunities for a tissue targeted approach with minimal plasma exposure.
Cycloalka[b]pyridine-3-carbonylguanidine derivatives, process for producing the same, and drugs containing the same
申请人:Toa Eiyo Ltd.
公开号:US06258829B1
公开(公告)日:2001-07-10
This invention relates to a cycloalka[b]pyridine-3-carbonylguanidine derivative represented by the following general formula (1):
and a salt thereof, which can provide a drug having sodium/proton (Na+/H+) exchange transport inhibitory action.
Regiospecific synthesis of α-(phenylthio)cycloalkenones and of α-phenyl-α-(phenylthio) ketones VIA αα-addition of phenylsulphenyl chloride to ∢-diazoketones
作者:M.Anthony McKervey、Pinit Ratananukul
DOI:10.1016/s0040-4039(00)81343-x
日期:1983.1
phenylsulphenyl chloride at room temperature to furnish α-chloro-α-(phenylthio)cycloalkanones which undergo ready dehydrochlorination to α-(phenylthio)cycloalkenones when treated with triethylamine; acyclic, terminal α-diazoketones also furnish α-chloro-α-(phenylthio)adducts which are useful electrophiles in the synthesis of α-phenyl-α-(phenylthio)ketones.
CYCLOALKA[b]PYRIDINE-3-CARBONYLGUANIDINE DERIVATIVES, PROCESS FOR PRODUCING THE SAME, AND DRUGS CONTAINING THE SAME
申请人:TOA EIYO LTD.
公开号:EP0972767A1
公开(公告)日:2000-01-19
This invention relates to a cycloalka[b]pyridine-3-carbonylguanidine derivative represented by the following general formula (1) :
[wherein R1 is hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, an amino lower alkyl group, a lower alkoxyalkyl group, an aryl group, a heterocyclic group, an aralkyl group, a phenoxy lower alkyl group or an aralkyloxy lower alkyl group; R2 is hydrogen atom, a halogen atom, a lower alkoxy group or a nitro group; A is a single bond or a vinylene group; B is a vinylene or the like group; D is a single bond, a methylene group or an ethylene group; and E is a vinylene or the like group] and a salt thereof, which can provide a drug having sodium/proton (Na+/H+) exchange transport inhibitory action.