Patent ID: 8067462

Claim:
A compound having the structure of the formula wherein, R 1 is H or Bz when no more than three of R 8 , R 9 , R 10 and R 11 are H, or R 1 is Bn, (C 1 -C 4 ) alkyl, or CF 3 ; R 2 is H, (C 1 -C 4 ) alkyl, halide, OC(O)(C 1 -C 4 )alkyl, OC(O)Ph, or OCF 3 ; R 3 is p-toluene sulfonyloxy, methane sulfonyloxy, C(O)(C 1 -C 4 )alkyl, or OC(O)(C 1 -C 4 )alkyl, bond α is a single bond, and bond β is a double bond or R 3 is O, bond α is a double bond and bond β is a single bond; R 4 is H, I, Br, Cl, Si(CH 3 ) 3 , (C 1 -C 4 )alkyl, or OCF 3 , R 5 is OH, OSi(CH 3 ) 3 , O(C 1 -C 4 ) alkyl, or OCF 3 , and bond γ is a single bond, or R 5 is O and bond γ is a double bond; R 6 is H, (C 1 -C 4 ) alkyl, or CF 3 ; R 7 is H, OH, (C 1 -C 4 )alkyl, CH 2 OBn, CH 2 O(C 1 -C 4 )alkyl, CH 2 OH, halide, CH 2 OCF 3 or OCF 3 and bond ε is a single bond, or R 7 is CH 2 and bond ε is a double bond; R 8 , R 9 , and R 10 are each independently H, (C 1 -C 4 )alkyl, halide, OH, or OCF 3 ; R 11 is H, (C 1 -C 4 )alkyl, halide, OH, or OCF 3 and bond δ is a single bond; R 12 is H, (C 1 -C 4 )alkyl, O(C 1 -C 4 )alkyl, p-toluene sulfonyloxy or methane sulfonyloxy, halide, OH, OCF 3 , or R 15 R 16 Si, where R 15 and R 16 are each independently (C 1 -C 4 )alkyl, furanyl or Ph, and bond δ is a single bond; R 11 together with R 12 and the carbons to which each is attached to form an oxirane moiety form an ether group and bond δ is a single bond; or R 11 and R 12 are absent and bond δ is a double bond.