A new synthesis of Rhein
PT Gallagher, TA Hicks, AP Lightfoot, WM Owton
Index: Gallagher, Peter T.; Hicks, Terry A.; Lightfoot, Andrew P.; Martin Owton Tetrahedron Letters, 1994 , vol. 35, # 2 p. 289 - 292
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Citation Number: 16
Abstract
Abstract A novel synthesis of Rhein (2), the active metabolite of the anti-osteoarthritic drug Diacetyl Rhein (1) has been acehived. Key steps include stereospecific olefination of aldehyde 21 with novel phosphonate 28 and the cyclisation of acid 31 to produce anthracene 32.
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