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RX 871024

Identifiers
IUPAC name 2-(2-imidazolin-2-yl)-1-phenyl-1H-indole
CAS Number	142872-84-2
PubChem CID	91885462
ChemSpider	8396346
Chemical and physical data
Formula	C17H15N3
Molar mass	261.328 g·mol
3D model (JSmol)	Interactive image
SMILES C1CN=C(N1)C2=CC3=CC=CC=C3N2C4=CC=CC=C4
InChI InChI=1S/C17H15N3/c1-2-7-14(8-3-1)20-15-9-5-4-6-13(15)12-16(20)17-18-10-11-19-17/h1-9,12H,10-11H2,(H,18,19) Key:XUIUIZMIIPNHIJ-UHFFFAOYSA-N

To treat diabetes. The design is an attempt to generate an analog of Idazoxan.

The structure is a Imidazoline and also an N-phenylindole.

Synthesis

Prec: Patent:

Ex 1: The reaction between ethyl 1-phenyl-1H-indole-2-carboxylate (1) and ethylenediamine (2) gives RX 871024 (3). Also, reaction of 1-phenylindole-2-carbonitrile, PC20095505 with ethylenediamine monotosylate gives higher yield.

References

1. Denis Bigg, et al. US4659731 (1987 to Synthelabo SA).
2. Fagan, Gay P.; Chapleo, Christopher B.; Lane, Anthony C.; Myers, Malcolm; Roach, Alan G.; Smith, Colin F. C.; Stillings, Michael R.; Welbourn, Anthony P. (1988). "Indoline analogs of idazoxan: potent .alpha.2-antagonists and .alpha.1-agonists". Journal of Medicinal Chemistry. 31 (5): 944–948. doi:10.1021/jm00400a009.
3. Dolby, Lloyd J.; Lord, Pierre D. (1969). "2-Alkylidene-2H-indole intermediates. Thermolysis of 2-hydroxydiphenylmethylindole". The Journal of Organic Chemistry. 34 (10): 2988–2993. doi:10.1021/jo01262a042.
4. Christopher B. Chapleo & Gay P. Fagan, US5385919 (1995 to Reckitt & Colman Products Limited).

• Anti-diabetic drugs
• Imidazolines