| 摘要 |
The invention relates to a compound having the formula I wherein R1 is hydroxy, (1-6C)alkoxy or NR4R5, R4 and R5 being independently hydrogen, (1-6C)alkyl, (3-7C)cycloalkyl, (2-6C)alkenyl, (4-6C)aryl or (5-7C)aralkyl, the aryl groups of which may be optionally substituted with halogen, (1-6C)alkyl or (1-6C)alkoxy; R2 is a halo atom, (1-8C)acyloxy, -O-C(O)-O-(1-6C)alkyl, -O-C(O)-O-(5-7C)aralkyl, -SR6, -S(O)R6, -SeR6 or -Se(O)R6, R6 being (1-6C)alkyl or (4-6C)aryl; and R3 is -Si(R7)3, R7 being independently (1-6C)alkyl or (4-6C)aryl. The compounds of the invention may be used as protective groups or as linkers in solid phase organic chemistry. |
