Radical-mediated opening of a trisubstituted epoxy alcohol using cp(2)TiCl was followed by diastereoselective reduction of the resulting product with a centrally located methylene group, flanked on both sides by two chiral hydroxyl-bearing carbons, to build all the three chiral centers of (+)-prelactone B 1 in their desired stereochemistries leading to the total synthesis of the molecule. (C) 2003 Elsevier Science Ltd. All rights reserved.
Radical-mediated opening of a trisubstituted epoxy alcohol using cp(2)TiCl was followed by diastereoselective reduction of the resulting product with a centrally located methylene group, flanked on both sides by two chiral hydroxyl-bearing carbons, to build all the three chiral centers of (+)-prelactone B 1 in their desired stereochemistries leading to the total synthesis of the molecule. (C) 2003 Elsevier Science Ltd. All rights reserved.