Title
| - Stereospecific synthesis of selectively C-7-acetalized substituted 4a.beta.-methyl-3,4,4a,5,6,8a.alpha.-hexahydronaphthalene-1(2H),7(8H)-diones. A short total synthesis of (.+-.)-.beta.-eudesmol, (.+-.)-.beta.-selinene, and (.+-.)-.beta.-dictyopterol
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