Alkaloids of the Celastraceae

Alkaloids of the Celastraceae.—The structures of eleven new alkaloids of this family, all related to nicotinic acid, have been elucidated, largely by interconversions and degradations and by spectral study and analysis.28-30 

The interest in alkaloids of the nicotine group continues. Convenient syntheses of 7V-CD3-labelled nicotine and nicotine analogues have been described.38 The 13C n.m.r. spin-lattice relaxation times of nicotine have been analysed in terms of anisotropic rotational diffusion constants. The results agree best with a dihedral angle of H(2 )-C(2 )-C(3)-C(2) of ca 0°.39 Dithiodinicotyrine , obtained 

The tobacco alkaloid anabasine (37) has been synthesized from 3-pyridyl-lithium (prepared from 3-bromopyridine and t-butyl-lithium) by reaction with A piperideine at —120 °C.46 

---

Medical Uses of Monoterpenoid Alkaloids Sesquiterpenoid Alkaloids Dendrobium Alkaloids Nuphar and Castor Alkaloids Alkaloids of the Celastraceae and Hippocrateaceae Khat... 

---