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Embedding seven‐membered rings into polycyclic aromatic molecules is attractive as they can exert an influence on molecular conformation that ultimately changes the solubility and π‐electronics. The considerations in designing and synthesizing a highly strained azatriseptane framework are discussed herein. We employ a twofold macrocyclization strategy to form the [7,7,7]‐system and through scoping...
Two new natural taxanes were isolated from the heartwood of Taxus cuspidata. The structures were established as rel‐(2α,5α,7β,9α,10β,12α)‐7,9‐bis(acetyloxy)‐2‐(benzoyloxy)‐11,12‐epoxy‐1,5‐dihydroxy‐10‐[(hydroxyacetyl)oxy]tax‐4(20)‐en‐13‐one (1), and (2α,5α,10β,14β)‐taxa‐4(20),11‐diene‐2,5,10,14‐tetrol 2‐acetate (2) on the basis of spectroscopic analysis.
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