Ch. Kuo et al., THE SYNTHESIS OF C3-METHYL, C3-DECARBOXY-ZARAGOZIC ACID-A - A POTENT SQUALENE SYNTHASE INHIBITOR, Tetrahedron letters, 34(43), 1993, pp. 6863-6866
The tide compound and its C4-pivaloyloxy methyl (POM) ester have been
synthesized by converting zaragozic acid A to the kev intermediate of
the protected C3-hydroxymethyl compound 6. Subsequent radical deoxygen
ation via the Barton-McCombie procedure, followed by deprotection, aff
orded the product 11 (L-703,370). This compound possesses squalene bio
synthesis inhibitory potency of 22% at 24 mpk and its C4-POM ester, 12
(L-735,142), exhibits an ED50 of 1.6 mpk in our oral mouse assay.