6Westley J W ed. Polyether Antibiotics. Marcel Dekker: New York,1983. Vol Ⅰ and Ⅱ
7Karl J H, Mare G H, Gurpreet S B. Control of Olefin geometry in the Bryostatin B-ring through exploitation of a C2-symmetry breaking tactic and a Smith-Tietze coupling reaction. Org Lett,2000, 2:2189-2192
8David A E, Jeffrey S J, Edvand J O. Enantioselective synthesis of dihydropyrans. Catalysis of hetero Diels-Alder reactions by bis(oxazoline) copper(Ⅱ) complexes. J Am Chem Soc, 2000, 122:1635-1649
9Edmunds A J F, Trueb W. A simple asymmetric synthesis of cis-2,6-disubstituted tetrahydropyran acetic acid derivatives.Tetrahedron Lett, 1997, 38:1009-1012
10Chappie, Curtis. Content-based Instruction in Hong Kong: Stu-dent Responses to Film(j). System, 2000.
