Total Syntheses of the Dihydrofuranonecarboxylate Natural Products Gregatin B and E: Gram-Scale Synthesis of (+)-Gregatin B and Unambiguous Assignment of the …
... congeners C–E 1 ) were synthesized by Clemo and Pattenden in 1982.(3) They ... Circumventing these constraints we now synthesized gregatin B, gregatin E,(7) and epi-gregatin E ... Our synthesis began with a (DHQ) 2 PHAL-mediated Sharpless dihydroxylation of benzyl tiglate (1 ...