Synthetic approaches to the alkaloids of the ancistrocladaceae: (–)-O-methylancistrocladine and (+)-O-methylhamatine
作者:Mark A. Rizzacasa、Melvyn V. Sargent
DOI:10.1039/c39900000894
日期:——
An asymmetric total synthesis of the naphthylisoquinoline alkaloid (–)-O-methylancistrocladine (2) is described; the synthetic method also provides routes to the atropisomer O-methylhamatine (4) and the enantiomers of these alkaloids.
This invention relates to a method for detoxication of inorganic or organic esters including OP nerve agents, cocaine, and respective analogs. More specifically, this invention pertains to the treatment of potentially neurotoxic esters or other ester groups by elaborating a more effective hydrolytic enzyme for therapeutic application. The structures of the synthesized OP analogs are provided. This invention also provides a diagnostic method and an Array Biosensor for detecting OP agents in biological and environmental samples.
SYNTHESIS AND REACTIVITY OF DENDRIMERS BASed ON PHOSPHORYL (P=O) GROUPS
作者:Marie-Laure Lartigue、Anne-Marie Caminade、Jean Pierre Majoral
DOI:10.1080/10426509708044195
日期:1997.4.1
The synthesis of phosphoryl-based dendrimers is described, using the reiteration of a two-steps process which gives alternatively aldehyde and P(O)Cl-2 end groups. The synthesis has been carried out up to the third generation, to give a compound which bears 24 chlorine atoms on the surface. Preliminary experiments on the first generation of the dendrimer possessing either 6 CHO or 6 Cl groups show that these compounds display a versatile reactivity. For instance, alpha, beta-unsaturated esters, crown ethers, chiral phosphine sulfides or diallylamine are grafted on the surface, and the resulting dendrimers are isolated in good to nearly quantitative yields.
Aagaard, Olav M.; Janssen, René A. J.; De Waal, Bas F. M., Journal of the American Chemical Society, 1990, vol. 112, # 3, p. 938 - 944
作者:Aagaard, Olav M.、Janssen, René A. J.、De Waal, Bas F. M.、Buck, Henk M.
DOI:——
日期:——
Janssen, R. A. J.; Aagaard, O. M.; Buck, H. M., Phosphorus, Sulfur and Silicon and the Related Elements, 1990, vol. 51/52, p. 758