Prior to this modification, the minor diastereomer could only be removed at the stage of the bis-TBS ether (-)- 21 .
此之前修改,只能拆除小
台的双乙醚TBS电视台(94.1)21.
异构体Prior to this modification, the minor diastereomer could only be removed at the stage of the bis-TBS ether (-)- 21 .
此之前修改,只能拆除小台的双乙醚TBS电视台(94.1)21.
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