01-09-2022 дата публикации
Номер: US20220275018A1
Принадлежит:
The present invention relates to novel spirobicyclic intermediates useful in the synthesis of spirobicyclic nucleoside analogues. 3. The compound of claim 1 , wherein the hydroxyl protecting group is selected from a silyl group claim 1 , Calkyl claim 1 , Calkyl-O—Calkyl claim 1 , tetrahydropyranyl claim 1 , allyl claim 1 , benzyl claim 1 , —CH-naphthyl claim 1 , or benzoyl claim 1 , —C(═O)—Calkyl claim 1 , or —C(═O)-phenyl; wherein benzyl claim 1 , —CH-naphthyl claim 1 , and benzoyl claim 1 , are optionally substituted with one or two substituents each independently selected from —CHand —OCH; and/or the diol protecting group is C(Calkyl)-.4. The compound of claim 1 , wherein Y is O.5. The compound of claim 1 , wherein Y is CH.6. The compound of claim 1 , wherein n is 1.7. The compound of claim 6 , wherein:{'sup': 1', '2', 'a', 'a', 'a', 'a', 'a', 'c', 'a, 'sub': 2', 'm', '2', '2', 'm', '2', 'm', '2', 'm', '2', '2', 'm', '2', 'm', 'x', '1-6', '2, 'Ris hydrogen and R—(CH)NR, —(CH)OR, —(CH)C(O)OR, —(CH)C(O)NR, —(CH)C(O)R, —(CH)S(O)R, a silyl group, Calkyl substituted with a silyl group, ═O or ═CR; or'}{'sup': 2', '1', 'a', 'a', 'a', 'a', 'a', 'c', 'a, 'sub': 2', 'm', '2', '2', 'm', '2', 'm', '2', 'm', '2', 'm', '2', '2', 'm', '2', 'm', 'x', '1-6', '2, 'Ris hydrogen and Ris —(CH)NR, —(CH)OR, —(CH)OPG, —(CH)C(O)OR, —(CH)C(O)NR, —(CH)C(O)R, —(CH)S(O)R, a silyl group, Calkyl substituted with a silyl group, —O-aryl, ═O or ═CR.'}8. The compound of claim 1 , wherein n is 0.9. The compound of claim 8 , wherein one of Rand Ris hydrogen and the other is —(CH)NR claim 8 , —(CH)OR claim 8 , —(CH)OPG claim 8 , —C(O)OR claim 8 , —C(O)NRor —B(OR).16. The compound of claim 15 , wherein Ris OR.20. The compound of claim 18 , wherein n is 1.21. The compound of claim 20 , wherein:{'sup': 1', '2', 'a', 'a', 'a', 'a', 'a', 'c', 'a, 'sub': 2', 'm', '2', '2', 'm', '2', 'm', '2', 'm', '2', '2', 'm', '2', 'm', 'x', '1-6', '2, 'Ris hydrogen and Ris —(CH)NR, —(CH)OR, —(CH)C(O)OR, —(CH)C(O)NR, —( ...
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