河北医科大学药学院2018 Azadirachtin sees first total synthesis 10 August 2007 "OH 印 A complex natural product has finally succumbed to its first total ynthesis after 22 of attempts by eminent organic chemists. 87 Me Me HO Heinrich O.Wieland Structure for Ergsterol 1932 朱子浦 Me Et、 MeH○ M Me OH Structure for Cholesterol 1932 Bemal,J.D.Nature,1932.19,7 天然药物化学教研室史清文教授 4 河北医科大学药学院2018 天然药物化学教研室史清文教授 4 87 Azadirachtin sees first total synthesis 10 August 2007 A complex natural product has finally succumbed to its first total synthesis after 22 years of attempts by eminent organic chemists. 印楝素 88 Me Me Me Me OH Et Me Me Me Me Me HO H H Me Me Me Me Me HO H H H Structure for Cholesterol Wieland/Windaus 1927 NP Structure for Ergsterol 1932 Structure for Cholesterol 1932 Heinrich O. Wieland 汪猷 Bernal, J. D. Nature, 1932, 129, 721. 朱子清