Total Synthesis of the Tropoloisoquinoline Alkaloid Pareitropone via Alkynyliodonium Salt Chemistry and Related Studies
摘要:
The first chemical synthesis of pareitropone, by a route featuring application of alkynyliodonium salt chemistry, is described. The key transform initiates with addition of an alkylidenecarbene, derived by intramolecular nucleophile addition to the alkynyliodonium moiety, to a proximal aromatic ring. This addition delivers a highly strained norcaradiene substructure that rapidly reorganizes to furnish the pareitropone skeleton.
Total Synthesis of the Tropoloisoquinoline Alkaloid Pareitropone via Alkynyliodonium Salt Chemistry and Related Studies
摘要:
The first chemical synthesis of pareitropone, by a route featuring application of alkynyliodonium salt chemistry, is described. The key transform initiates with addition of an alkylidenecarbene, derived by intramolecular nucleophile addition to the alkynyliodonium moiety, to a proximal aromatic ring. This addition delivers a highly strained norcaradiene substructure that rapidly reorganizes to furnish the pareitropone skeleton.
Total Synthesis of the Tropoloisoquinoline Alkaloid Pareitropone via Alkynyliodonium Salt Chemistry and Related Studies
作者:Ken S. Feldman、Timothy D. Cutarelli、Romina Di Florio
DOI:10.1021/jo026337w
日期:2002.11.1
The first chemical synthesis of pareitropone, by a route featuring application of alkynyliodonium salt chemistry, is described. The key transform initiates with addition of an alkylidenecarbene, derived by intramolecular nucleophile addition to the alkynyliodonium moiety, to a proximal aromatic ring. This addition delivers a highly strained norcaradiene substructure that rapidly reorganizes to furnish the pareitropone skeleton.
Alkynyliodonium Salts in Organic Synthesis. Application to the Total Synthesis of the Tropoloisoquinoline Alkaloid Pareitropone
作者:Ken S. Feldman、Timothy D. Cutarelli
DOI:10.1021/ja0277430
日期:2002.10.1
The synthesis of the tropoloisoquinoline alkaloid pareitropone has been accomplished in 14 steps from 2,3,4-trimethoxybenzoic acid. The key transformations include the generation of an alkylidenecarbene intermediate through intramolecular addition of a tosylamide anion to an alkynyliodonium salt, and the cycloaddition of that carbene to a peri positioned aromatic ring to afford a cycloheptatrienylidene product featuring the intact pareitropone skeleton.