Spiro[3H-indole-3,1′(5′H)-indolizine]-7′-acetic acid, 6′-ethyl-1,2,2′,3′,6′,7′,8′,8′a-octahydro-α-(methoxymethylene)-2-oxo-, methyl ester, (αE,1′S,6′R,7′S,8′aS)-
7-Isorhyncophylline
Corynoxan-16-carboxylic acid, 16,17-didehydro-17-methoxy-2-oxo-, methyl ester, (16E,20α)-
Isorhyncophylline
Spiro[3H-indole-3,1′(5′H)-indolizine]-7′-acetic acid, 6′-ethyl-1,2,2′,3′,6′,7′,8′,8′a-octahydro-α-(methoxymethylene)-2-oxo-, methyl ester, [1′S-[1′α,6′α,7′β(E),8′aα]]-
(+)-Isorhynchophylline