With large quantities of the vinyl aldehyde (+)- 18 in hand, the stage was now set for the tandem introduction of the remaining two stereocenters [C(3) and C(12)] employing the Koga r eaction.是什麼意思_With large quantities of the vinyl aldehyde (+)- 18 in hand, the stage was now set for the tandem introduction of the remaining two stereocenters [C(3) and C(12)] employing the Koga r eaction.在線翻譯_英語_讀音_用法_例句