| 摘要 |
This invention provides processes for preparing a group of novel bridged tricyclic compounds having the formula:wherein X is (CH2)n, O, S, SO, SO2 or CR<1>R<2>; n is 1 or 2; and R<1 >and R<2 >are, independently, hydrogen, halogen, hydroxy, alkyl of one to six carbon atoms, alkoxy of one to six carbon atoms, or R<1 >and R<2>, taken together with the carbon to which they are attached, form cycloalkyl of three to six carbon atoms, an alkylidene of up to six carbon atoms or a carbonyl.
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