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Expedient syntheses of antofine and cryptopleurine via intramolecular 1,3-dipolar cycloaddition. 2007

Sanghee Kim, and Yun Mi Lee, and Jaekwang Lee, and Taeho Lee, and Ye Fu, and Yanling Song, and Jihee Cho, and Deukjoon Kim
College of Pharmacy, Seoul National University, San 56-1, Shilim, Kwanak, Seoul 151-742, Korea. pennkim@snu.ac.kr

The practical and expedient total syntheses of the representative phenanthroindolizidine and phenanthroquinolizidine alkaloids, antofine and cryptopleurine, are described. Construction of the pyrrolidine and piperidine ring of each alkaloid was achieved by using an intramolecular 1,3-dipolar cycloaddition of an azide onto an alkene and subsequent reduction of the resulting imine and aziridine.

UI MeSH Term Description Entries
D007211 Indoles Benzopyrroles with the nitrogen at the number one carbon adjacent to the benzyl portion, in contrast to ISOINDOLES which have the nitrogen away from the six-membered ring.
D007536 Isomerism The phenomenon whereby certain chemical compounds have structures that are different although the compounds possess the same elemental composition. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) Isomerisms
D010618 Phenanthrolines Phenanthroline
D006571 Heterocyclic Compounds Cyclic compounds that include atoms other than carbon in their ring structure. Heterocyclic Compound,Compound, Heterocyclic,Compounds, Heterocyclic
D000470 Alkaloids Organic nitrogenous bases. Many alkaloids of medical importance occur in the animal and vegetable kingdoms, and some have been synthesized. (Grant & Hackh's Chemical Dictionary, 5th ed) Alkaloid,Plant Alkaloid,Plant Alkaloids,Alkaloid, Plant,Alkaloids, Plant
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular

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