關鍵字查詢 | 類別:期刊論文 | | 關鍵字:6-Trihydroxythiepanes from d-(-)-Quinic Acid

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序號 學年期 教師動態
1 95/1 化學系 施增廉 教授 期刊論文 發佈 Expeditious Synthesis of New 3,4,6-Trihydroxythiepanes from d-(-)-Quinic Acid , [95-1] :Expeditious Synthesis of New 3,4,6-Trihydroxythiepanes from d-(-)-Quinic Acid期刊論文Expeditious Synthesis of New 3,4,6-Trihydroxythiepanes from d-(-)-Quinic AcidShih, Tzenge-lien; Fang, Yi-chuan淡江大學化學學系quinic acid; thiepane; thiosugarPhiladelphia: Taylor & Francis Inc.Synthetic Communications 37(19), pp.3337-3349We report herein that the new seven-membered-ring thiosugars (thiepanes) have been synthesized from d-(-)-quinic acid. The key feature of the synthesis involves the thiocyclization of protected hexane-1,2,3,5,6-pentanol derivatives. The subsequent step of acidic removal of protecting groups is critical in the reaction conditions to obtain the required 3,4,6-trihydroxythiepanes. During the course of studies, the unexpected trihydroxythiopyrans are formed because of the ring contractions of their corresponding trihydroxythiepanes under various conditions.tku_id: 000073273;Made available in DSpace on 2010-08-10T01:54:06Z (GMT). No. of bitstreams: 1 0039-7911_37(19)p3337-3349.p
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