Farnesyl Diphosphate-Based Inhibitors of Ras Farnesyl Protein Transferase
作者:Dinesh V. Patel、Robert J. Schmidt、Scott A. Biller、Eric M. Gordon、Simon S. Robinson、Veeraswamy Manne
DOI:10.1021/jm00015a013
日期:1995.7
The rational design, synthesis, and biological activity of farnesyldiphosphate (FPP)-based inhibitors of the enzyme Ras farnesyl protein transferase (FPT) is described. Compound 3, wherein a beta-carboxylic phosphonic acid type pyrophosphate (PP) surrogate is connected to the hydrophobic farnesyl group by an amide linker, was found to be a potent (I50(FPT) = 75 nM) and selective inhibitor of FPT,
dihydroxylation of a series of functionalised polyenes is described. Under acidic conditions, the osmateester derivatives obtained from oxidation with OsO4/TMEDA undergo an intramolecular cyclisation reaction forming functionalised tetrahydrofurans with high stereoselectivity and in good yield. The generality of this method is illustrated with an application to the synthesis of a bis-tetrahydrofuran ring system
Isoprenoid derivatives and pharmaceutical preparations containing the
申请人:Terumo Kabushiki Kaisha
公开号:US05130483A1
公开(公告)日:1992-07-14
Isoprenoid derivatives represented by the general formula (I) ##STR1## wherein R represents a hydrogen atom or a lower alkyl group, X represents --CH.sub.2 --, --O-- or --NH--, n represents number of the double bond in trans-configuration and is 1 or 2, and m is an integer from 0 to 3. The compounds have a 5-lipoxygenase-inhibiting activity and are useful as a therapeutic agent for such diseases as allergy, nephritis, hepatitis, rheumatism and gastric ulcer.
The present invention concerns farnesylamine derivatives, compositions containing these compounds, and methods of using these compounds and compositions as inhibitors of ras-mediated signal transduction and inhibitors of aberrant cell growth, e.g., as anti-cancer agents, as well as anti-fungal agents. Other non-malignant diseases characterized by proliferation of cells that may be treated using the farneylamine derivatives of the include, but are not limited to, cirrhosis of the liver; graft rejection; restenosis; and disorders characterized by a proliferation of T cells such as autoimmune diseases, e.g., type 1 diabetes, lupus and multiple sclerosis.
Mechanism of the Reaction of Olefins with Nitrous Anhydride (O═N–O–N═O) to Form 1,2-Oxazetes
作者:G. Sudhakar Reddy、E. J. Corey
DOI:10.1021/acs.orglett.2c04080
日期:2023.1.13
The mechanistic pathway for the formation of 1,2-oxazetes by reaction of olefins with nitrous anhydride has been clarified. The initial reaction intermediate, a β-nitroso nitrite ester that is sensitive to light, undergoes O–NO fission to form a β-nitroso alkoxy radical, even with ambient fluorescent lighting but much faster with blue light irradiation. The oxygen of the alkoxy radical subsequently