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  • Title: Antitumor agents 37. The isolation and structural elucidation of isohelenol, a new antileukemic sesquiterpene lactone, and isohelenalin from Helenium microcephalum.
    Author: Sims D, Lee KH, Wu RY.
    Journal: J Nat Prod; 1979; 42(3):282-6. PubMed ID: 490173.
    Abstract:
    The known compound isohelenalin (1) was isolated from Helenium microcephalum and the previously reported structure confirmed on the basis of physicochemical data and chemical transformation. In addition, a new antileukemic sesquiterpene lactone, isohelenol (2), was isolated and its structure elucidated.
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