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2004
Other bioactive products
U 1300
Structural Revision and Total Synthesis of Azaspiracid-1. Part 1. Intelligence
and Tentative Proposal. — Falsification of previously reported structures
50- 201 Gathering
for the title compound leads to a detailed structural investigation based on chemical
degradation of the natural product followed by synthesis of substructures. The correct
structure of azaspiracid-1 is depicted in (I). Main differences to the originally proposed
structures relate to the stereochemical assignments in rings A,B and E. —
(NICOLAOU*, K. C.; et al.; Angew. Chem., Int. Ed. 43 (2004) 33, 4312-4318; Dep.
Chem., Scripps Res. Inst., San Diego, La Jolla, CA 92037, USA; Eng.) — Nuesgen
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