Catalyzed Cyclizations Leading to Enrichment of Functionality and Chirality. A General Approach to Dibenzocyclooctadiene Lignans from α,ω-Diynes
摘要:
The [B-Sn]-mediated cyclization of alpha,omega-diynes results in not only an increase in the functionalizable groups (incorporated as highly versatile vinyl-B and vinyl-Sn groups) but also an increase in new serviceable stereochemical elements. The alkylidene functionalities at C-7 and C-8 offer unprecedented opportunities for the synthesis of highly functionalized dibenzocyclooctadienes. Examples of interiotherins and gomisins are provided.
Catalyzed Cyclizations Leading to Enrichment of Functionality and Chirality. A General Approach to Dibenzocyclooctadiene Lignans from α,ω-Diynes
摘要:
The [B-Sn]-mediated cyclization of alpha,omega-diynes results in not only an increase in the functionalizable groups (incorporated as highly versatile vinyl-B and vinyl-Sn groups) but also an increase in new serviceable stereochemical elements. The alkylidene functionalities at C-7 and C-8 offer unprecedented opportunities for the synthesis of highly functionalized dibenzocyclooctadienes. Examples of interiotherins and gomisins are provided.