Conjugate reduction of an enone accompanied by in situ intramolecular aldol condensation was used to construct the tetrasubstituted cyclohexane nucleus of phomactins. Subsequent relay ring-closing metathesis completed the nine-membered ansa bridge of the diterpenoid framework.
Biosynthesis of phomactins: common intermediate phomactatriene and taxadiene.
Tetsuo Tokiwano et al.
Chemical communications (Cambridge, England), (11)(11), 1324-1325 (2004-05-22)
Synthesis of homogeneous FePt nanoparticles using a nitrile ligand.
Virginie Monnier et al.
Small (Weinheim an der Bergstrasse, Germany), 4(8), 1139-1142 (2008-07-16)
Dalton transactions (Cambridge, England : 2003), (33)(33), 4029-4038 (2006-10-10)
The equilibrium constants of Cu(II), Zn(II), Ca(II) and Gd(III) with 1,15-bis(N,N-dimethyl)-5,11-dioxo-8-(N-benzyl)-1,4,8,12,15-pentaazapentadecane (La) have been studied at 25 degrees C and an ionic strength of 0.15 mol dm-3. Copper forms more stable complexes with La than the other metal ions investigated.
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