| 摘要 |
A compound of Formula V
wherein ---- represents a single or double bond, provided that two double bonds are not adjacent to each other;
R 1 and R 2 are independently selected from C 1-10 alkyl, C 6-10 aryl, C 3-10 cycloalkyl, C 1-10 alkyleneC 6-10 aryl, C 1-10 alkyleneC 3-10 cycloalkyl and PG, except when - - O represents =O, then R 2 is not present;
PG is a protecting group;
R 3 is selected from C 3-10 cycloalkyl, C 3-10 cycloalkenyl, C 1-10 alkyl, C 2-10 alkenyl, C 6-10 aryl, C 1-10 alkyleneC 6-10 aryl and C 1-10 alkyleneC 3-10 cycloalkyl;
X is a counteranion, and
one or more available hydrogens in R 1 , R 2 and R 3 is/are optionally replaced with F and/or one or more of available atoms in R 1 , R 2 and R 3 is/are optionally replaced with an isotopic label,
or a salt or solvate thereof. |
