Xylamidine

Xylamidine

Clinical data
ATC code	none
Identifiers
IUPAC name N'-[2-(3-methoxyphenoxy)propyl]-2-(3-methylphenyl)ethanimidamide
CAS Number	6443-50-1
PubChem (CID)	22951
ChemSpider	21486
UNII	NY0PC84NZK
Chemical and physical data
Formula	C19H24N2O2
Molar mass	312.406 g/mol
3D model (Jmol)	Interactive image
SMILES CC1=CC(=CC=C1)CC(=NCC(C)OC2=CC=CC(=C2)OC)N
InChI InChI=1S/C19H24N2O2/c1-14-6-4-7-16(10-14)11-19(20)21-13-15(2)23-18-9-5-8-17(12-18)22-3/h4-10,12,15H,11,13H2,1-3H3,(H2,20,21) Key:JRYTUFKIORWTNI-UHFFFAOYSA-N
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Xylamidine is a drug which acts as an antagonist at the 5HT_2A receptor, and to a lesser extent at the 5HT_1A receptor. It does not cross the blood–brain barrier, which makes it useful for blocking peripheral serotonergic responses like cardiovascular^[1][2] and gastrointestinal effects,^[3] without producing the central effects of 5HT_2A blockade such as sedation, or interfering with the central actions of 5HT_2A agonists.^[4]

Synthesis

Xylamidine is an amidine which serves as a serotonin inhibitor. This agent is prepared by alkylation of 3-methoxyphenol (m-methoxyphenol) with α-chloropropionitrile, KI and potassium carbonate in MEK to give #, which is in turn reduced with lithium aluminum hydride to give the primary amine #. When # is treated with m-tolylacetonitrile in the presence of anhydrous HCl, the synthesis is completed. Alternately, one can react primary amine # with m-tolylacetamidine under acid catalysis to produce xylamidine.

References

1. Fuller, RW; Kurz, KD; Mason, NR; Cohen, ML (1986). "Antagonism of a peripheral vascular but not an apparently central serotonergic response by xylamidine and BW 501C67". European Journal of Pharmacology. 125 (1): 71–7. doi:10.1016/0014-2999(86)90084-1. PMID 3732393.
2. Dedeoğlu, A; Fisher, LA (1991). "Central and peripheral injections of the 5-HT2 agonist, 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane, modify cardiovascular function through different mechanisms". The Journal of Pharmacology and Experimental Therapeutics. 259 (3): 1027–34. PMID 1762059.
3. Baker, BJ; Duggan, JP; Barber, DJ; Booth, DA (1988). "Effects of dl-fenfluramine and xylamidine on gastric emptying of maintenance diet in freely feeding rats". European Journal of Pharmacology. 150 (1–2): 137–42. doi:10.1016/0014-2999(88)90759-5. PMID 3402534.
4. Dave, KD; Quinn, JL; Harvey, JA; Aloyo, VJ (2004). "Role of central 5-HT2 receptors in mediating head bobs and body shakes in the rabbit". Pharmacology, Biochemistry, and Behavior. 77 (3): 623–9. doi:10.1016/j.pbb.2003.12.017. PMID 15006475.