Preparation of ω-tetrahydropyran-2-ylsulfanylalkylmagnesium chlorides: Useful reagents for the synthesis of 1-(ω-mercaptoalkyl)-1,2-dihydrobuckminsterfullerenes (C60)
摘要:
omega-Tetrahydropyran-2-ylsulfanylalkylmagnesium chlorides are prepared as Grignard reagents containing protected mercaptoalkyl chains, which are useful for the direct introduction of omega-mercaptoalkyl chains to electrophiles. In order to prove the usefulness of these reagents, they were reacted with buckminsterfullerene (C(60)) to give 1-(omega-mercaptoalkyl)-1,2-dihydrobuckminsterfullerenes after the deprotection of THP group with TFA. (C) 1998 Elsevier Science Ltd. All rights reserved.
Bi(III) halides as efficient catalysts for the O-acylative cleavage of tetrahydrofurans: an expeditious entry to tetralins
作者:Simon J. Coles、James F. Costello、William N. Draffin、Michael B. Hursthouse、Simon P. Paver
DOI:10.1016/j.tet.2005.02.080
日期:2005.5
O-acylative cleavage of tetrahydrofurans using organic acid halides with catalytic Bi(III) halides is reported. X-ray crystallography is used to rationalise the failure of the reaction in the case of certain crowded acid chlorides, and a useful aspect of chemoselectivity is revealed. The synthetic potential of this reaction is illustrated with a highly efficient O-acylative cleavage/intramolecular
Boehme,H.; Mencke,B., Archiv der Pharmazie und Berichte der Deutschen Pharmazeutischen Gesellschaft, 1960, vol. 293, p. 54 - 67
作者:Boehme,H.、Mencke,B.
DOI:——
日期:——
2 PYRROLIDONE DERIVATIVES AS PROSTANOID AGONISTS
申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP1408961A1
公开(公告)日:2004-04-21
[EN] 2 PYRROLIDONE DERIVATIVES AS PROSTANOID AGONISTS<br/>[FR] DERIVES DE PYRROLIDONE COMME ANTAGONISTES DE PROSTANOIDE
申请人:HOFFMANN LA ROCHE
公开号:WO2003007941A1
公开(公告)日:2003-01-30
This invention relates to 8-aza prostanoid analogs which are generally EP4 receptor agonists and are represented by Formula I: wherein Q, B, X, I, Z, A and R1-R6 are as defined in the description, their synthesis and use for treatment of osteoporosis and increasing bone density.