Affinine

Affinine
Names
IUPAC name
(2S,6R,14S,E)-5-ethylidene-14-(hydroxymethyl)-3,14-dimethyl-2,3,4,5,6,7-hexahydro-1H-2,6-methanoazecino[5,4-b]indol-8(9H)-one
Other names
17-hydroxy-vobasan-3-one,
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C21H26N2O2/c1-4-13-11-23(3)19-9-15-14-7-5-6-8-17(14)22-20(15)18(25)10-16(13)21(19,2)12-24/h4-8,16,19,22,24H,9-12H2,1-3H3/b13-4-/t16-,19+,21+/m1/s1
    Key: PROSDVOTXQJUDA-PGVNYQEXSA-N
  • C/C=C1CN(C)[C@H]2CC3=C(C(C[C@H]/1[C@]2(C)CO)=O)NC4=C3C=CC=C4
Properties
C20H24N2O2
Molar mass 324.424 g·mol−1
Melting point 265°C (decomp.)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Affinine is a monoterpenoid indole alkaloid which can be isolated from plants of the genus Tabernaemontana. Structurally it can be considered a member of the vobasine alkaloid family and may be synthesized from tryptophan. Limited pharmacological testing has indicated that it may be an effective inhibitor of both acetylcholinesterase and butyrylcholinesterase.

See also