Meanwhile, we discovered the 13 C-NMR chemical shifts of granatoine (1-4) reported by Lin and co-workers 4a and those of xylogranatin F (1-3) reported by Bringmann and co-workers 4b were nearly identical, which suggested both groups had isolated the same compound. Due to the ease of access to the proposed structure of granatoine (1-4) using the synthetic route we developed, we undertook its synthesis to obtain experimental NMR data for the proposed structure. Employing the enantiomer of the 1,3-diketone fragment (15-4) and aldehyde fragment 10-7, we prepared granatoine over three steps in a similar fashion, whose 13 C-NMR chemical shifts did not match either of those reported by Lin and co-workers or those by Bringmann and co-workers.