Thrombin inhibitors based on [5,5] trans-fused indane lactams
摘要:
A series of trans-fused lactams containing the indane nucleus has been prepared. Compound 19 has much enhanced plasma stability compared with its lactone counterpart and shows appreciable in vitro anticoagulant activity. (C) 1999 Elsevier Science Ltd. All rights reserved.
Stereospecific cis radical addition. Convincing evidence for a 1,3-radical transfer reaction
作者:Brian J. Walker、Peter J. Wrobel
DOI:10.1039/c39800000462
日期:——
The addition of ethyl NN-dichlorocarbamate or NN-dichlorophosphoramidates to five-membered cyclic alkenes at 0 °C is stereospecific and cis; these results are conveniently explained by a 1,3-atom shift mechanism.
Stereoselective construction of vicinal diamines. Part 1. Synthesis of fused pyrazines
作者:Barry S. Orlek、Gary T. Borrett、Duncan M. Smith
DOI:10.1039/p19930001299
日期:——
A stereoselective approach to the construction of trans-1,2-diaminoindanes 8a, b and trans-1,2-diaminotetralins 9a, b is described. The trans-adducts 4 and 5, derived from the addition of N,N-dichlorourethane to indene and 1,2-dihydronaphthalene, react with aryl amines to give trans-diamines 8a, b and 9a, b via the protonated oxazoline intermediates 13 and 14. Elaboration of vicinal diamines 8a, b and 9a, b affords the diazabenzocycloheptafluorene 2 and dibenzopyrazinobenzazepine 3, respectively.
Stereoselective construction of vicinal diamines. Part 2. Synthesis of indenopyrazines
作者:Barry S. Orlek、Diane Lightowler
DOI:10.1039/p19930001307
日期:——
The trans-adduct 8 derived from indene and N,N-dichlorourethane serves as a precursor for the cis-1,2-diaminoindane 6 and the trans-diamines 7 and 14. Conversion of 6 and 14 into the triazabenzocyclo-heptafluorenes 1 and 2, respectively, via the indenopyrazines 4 and 5 is described.