1. a;Gao;Synlett Tetrahedron Tetrahedron Lett,2000
2. a Dictionary of Chinese Materia Shanghai Scientific Technological Publishers and Shougakukan;Yoaita;Phytochemistry,1994
3. a;Merritt;Nat Prod Rep Nat Prod Rep,1992
4. a Pure and Masked o - benzoquinone strategy in organic synthesis;Imamoto;Tetrahedron Lett Tetrahedron Lett Applied Chemistry Chem Rev,1985
5. a Diterpenes of Flowering Plants Springer New;Seaman;Nat Prod Rep,1990