A new synthesis of (−)-thioambrox and its 8-epimer
摘要:
This new and straightforward synthesis of (-)-thioambrox 2, a sulphur compound whose odour resembles ambergris, starts from sclareolide 4. The stereo selectivity of the final cyclization is independent of the catalyst selected, and compound 2 is always favoured over (+)-iso-thioambrox 3. With hydrochloric acid as catalyst, the cyclization is unexpectedly stereospecific to give 2 in high yield at room temperature. (c) 2005 Elsevier Ltd. All rights reserved.
A new synthesis of (−)-thioambrox and its 8-epimer
摘要:
This new and straightforward synthesis of (-)-thioambrox 2, a sulphur compound whose odour resembles ambergris, starts from sclareolide 4. The stereo selectivity of the final cyclization is independent of the catalyst selected, and compound 2 is always favoured over (+)-iso-thioambrox 3. With hydrochloric acid as catalyst, the cyclization is unexpectedly stereospecific to give 2 in high yield at room temperature. (c) 2005 Elsevier Ltd. All rights reserved.