Figure 3.

(A) Retrosynthesis of kupyaphores. (B) Synthesis of C12 kupyaphore 1a. (C) Telescoping synthesis from 7a to 10a and 10a to 2a sharing intermediates shown in (B).

(A) Retrosynthesis of kupyaphores. (B) Synthesis of C12 kupyaphore 1a. (C) Telescoping synthesis from 7a to 10a and 10a to 2a sharing intermediates shown in (B).