Chemokine receptor antagonists, in particular, 3,7-diazabicyclo[3.3.0]octane compounds according to formula (I) wherein R
1
-R
3
R
6c
and X
1
are as defined herein are antagonists of chemokine CCR5 receptors which are useful for treating or preventing an human immunodeficiency virus (HIV-1) infection, or treating AIDS or ARC. The invention further provides methods for treating diseases that are alleviated with CCR5 antagonists. The invention includes pharmaceutical compositions and methods of using the compounds for the treating diseases mediated by the CCR5 receptor.
Novel photochemical rearrangements of dihydro-1,3-thiazines
作者:Shameem H. Bhatia、David M. Buckley、Richard W. McCabe、Anthony Avent、Robert G. Brown、Peter B. Hitchcock
DOI:10.1039/a705331b
日期:——
The 4-methyl compound rearranges to a thiazolidine, which co-exists as an imino-tautomer in solution. The 4-ethyl derivative gives essentially a single isomer of an acyclic thioamido-diene, whilst the 4-benzyl derivative gives a mixture of all four possible thioamido-dienes. The 4-phenyl derivative gave a skeletally rearranged 2,5-dihydro-6H-1,3-thiazine which slowly rearranged to the corresponding
合成了一系列的4-烷基或4-苯基取代的2,3-二氢-6 H -1,3-噻嗪-5-羧酸酯,并在甲苯中光解。4-甲基化合物重排为噻唑烷,噻唑烷在溶液中以亚氨基互变异构体形式共存。4-乙基衍生物基本上给出了无环硫代酰胺基-二烯的单一异构体,而4-苄基衍生物给出了所有四种可能的硫代酰胺基-二烯的混合物。4-苯基衍生物产生骨架重排的2,5-二氢-6 H -1,3-噻嗪,其缓慢重排为相应的2,3-二氢-6 H -1,3-噻嗪。
Cycloaddition of Cross-Conjugated Trienes to Halogenated Quinones
作者:Michel Couturier、Paul Brassard
DOI:10.1055/s-1994-25553
日期:——
The chemoselectivity of [4 + 2] cycloadditions involving electronrich cross-conjugated trienes and halogenated quinones has been examined. The approach provides improved preparations of 6-acetyl-2,3,7-trihydroxyjuglone, solorinic and norsolorinic acids, and averythrin. It also confirms the structure proposed for haematommone and 3,8-dihydroxy-4-methoxy-2-methoxycarbonyl-1-methyl-anthraquinone but invalidates that of sopheranin.