(7S)-3',4',6,8-Tetrahydro-6',7'-dimethoxy-2'-methyl-6-methylenespiro[7H-indeno[4,5-d]-1,3-dioxole-7,1'(2'H)-isoquinoline]

(7S)-3',4',6,8-Tetrahydro-6',7'-dimethoxy-2'-methyl-6-methylenespiro[7H-indeno[4,5-d]-1,3-dioxole-7,1'(2'H)-isoquinoline] Chemische Eigenschaften,Einsatz,Produktion Methoden

• Beschreibung

  Corydalis ochotensis yields this alkaloid as an amorphous yellow-brown substance furnishing a crystalline methiodide, m.p. 225°C (dec.); [αl ²² _D + 49.2° (c 0.2, MeOH). The ultraviolet spectrum of the free base in MeOH has two absorption maxima at 226 and 287 mJi. When hydrogenated over Pd-C it yields a non_x0002_crystalline dihydro derivative with [α] ²² _D+ 112°. The dihydromethine is, however, crystalline, with m.p. 92°C.

• Einzelnachweise

  Manske., Can. J. Res., 16B, 81 (1938)
  Manske., ibid, 18B, 75 (1940)McLean, Mei-Sie Lin., Tetrahedron Lett., 3819 (1964)
  Synthesis: McLean, Mei-Sie Lin, Whelan., Tetrahedron Lett., 2425 (1968)
  Irie, Kishimoto, Uyeo., J. Chern. Soc., C, 3051 (1968)