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Date: 3-12-2015
2510
Date: 24-10-2019
504
Date: 23-6-2016
2497
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Disconnection at e and d bonds
In Anderson’s biogenetic-type cyclization, formation of the six membered C ring was first realized. A six membered ring system also served as a key step for free radical cyclization reported by Hee-Yoon Lee. Tandem radical cyclization was their central theme. Such radical cyclizations have been reported for the synthesis of natural products. Hee-Yoon Lee reported application of this strategy to the synthesis of α-Cedrene (Ter. Lett., 7713 (1998)). The success of this scheme hinged on two factors.
Figure 1.1
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أمراض منتصف العمر.. "أعراض خطيرة" سببها نقص المغنيسيوم
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لماذا تتناقص أعداد النحل عالميا؟
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ممثل المرجعية العليا: العتبة الحسينية تخطط لإنشاء مراكز متخصصة للكشف المبكر عن (سرطان الثدي) بعموم العراق
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