Horsfiline

Horsfiline

Names
IUPAC name (3R)-5-methoxy-1'-methylspiro[1H-indole-3,3'-pyrrolidine]-2-one
Identifiers
CAS Number	136247-72-8
ChemSpider	9217785
Jmol interactive 3D	Image
PubChem	11042617
InChI InChI=1S/C13H16N2O2/c1-15-6-5-13(8-15)10-7-9(17-2)3-4-11(10)14-12(13)16/h3-4,7H,5-6,8H2,1-2H3,(H,14,16)/t13-/m0/s1 Key: RVOLLKGLJIUGLG-ZDUSSCGKSA-N InChI=1/C13H16N2O2/c1-15-6-5-13(8-15)10-7-9(17-2)3-4-11(10)14-12(13)16/h3-4,7H,5-6,8H2,1-2H3,(H,14,16)/t13-/m0/s1 Key: RVOLLKGLJIUGLG-ZDUSSCGKBT
SMILES O=C2Nc1c(cc(OC)cc1)[C@]23CN(C)CC3
Properties
Chemical formula	C13H16N2O2
Molar mass	232.278
Melting point	125 to 126 °C (257 to 259 °F; 398 to 399 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Horsfiline is an oxindole alkaloid found in the plant Horsfieldia superba,^[1] which is used in traditional herbal medicine. It has analgesic effects and has been the subject of significant research both to produce it synthetically by convenient routes,^[2][3][4][5] and to develop analogues and derivatives which may have improved analgesic effects.^[6][7]

References

1. Jossang, A; Jossang, P; Hadi, HA; Sevenet, T; Horsfiline, Bodo B. (1991). "An oxindole alkaloid from Horsfieldia superba". Journal of Organic Chemistry 56 (23): 6527–6530. doi:10.1021/jo00023a016.
2. Lakshmaiah, G; Kawabata, T; Shang, M; Fuji, K (1999). "Total Synthesis of (−)-Horsfiline via Asymmetric Nitroolefination.". The Journal of Organic Chemistry 64 (5): 1699–1704. doi:10.1021/jo981577q. PMID 11674239.
3. Cravotto, G; Giovenzana, GB; Pilati, T; Sisti, M; Palmisano, G (2001). "Azomethine ylide cycloaddition/reductive heterocyclization approach to oxindole alkaloids: asymmetric synthesis of (−)-horsfiline.". The Journal of Organic Chemistry 66 (25): 8447–53. doi:10.1021/jo015854w. PMID 11735524.
4. Murphy, JA; Tripoli, R; Khan, TA; Mali, UW (2005). "Novel phosphorus radical-based routes to horsfiline.". Organic Letters 7 (15): 3287–9. doi:10.1021/ol051095i. PMID 16018642.
5. Trost, BM; Brennan, MK (2006). "Palladium Asymmetric Allylic Alkylation of Prochiral Nucleophiles: Horsfiline". Organic Letters 8 (10): 2027–30. doi:10.1021/ol060298j. PMC 2565574. PMID 16671773.
6. Tsai, YC; Liou, JP; Liao, R; Cheng, CY; Tao, PL (1998). "C-alkylated spirobenzofuran-3(2H),4'-1'-methyl-piperidine-7-ols as potent opioids: a conformation-activity study". Bioorganic & Medicinal Chemistry Letters 8 (14): 1813–8. doi:10.1016/S0960-894X(98)00318-7. PMID 9873439.
7. Alf Claesson, Britt-Marie Swahn, Odd-Geir Berge. Spirooxindole derivatives that act as analgesics. US Patent 6774132