摘要:
Disclosed are 2-methylene analogs of vitamin D 3 and related compounds, their biological activities, and various pharmaceutical uses for these analogs. Particularly disclosed are 1α-hydroxy-2-methylene-vitamin D 3 , (20 S )-1α-hydroxy-2-methylene- vitamin D 3 , and (5 E )- 1α,25-dihydroxy-2-methylene- vitamin D 3 , their biological activities, and various pharmaceutical uses for these compounds including methods of treating and/or preventing bone diseases and disorders.
摘要:
This present disclosure is directed to novel prodrugs of activated vitamin D3 compounds. The prodrugs can be designed to have one or more beneficial properties, such as selective inhibition of the enzyme CYP24, low calcemic activity, and anti-proliferative activity. Specifically, these prodrugs are 1-deoxy prohormones of active Vitamin D analogs, e.g. analogs of calcitriol. This disclosure is also directed to pharmaceutical and diagnostic compositions containing the prodrugs of the invention, and to their medical use, particularly as prodrugs in the treatment and/or prevention of diseases.
摘要:
A method of preparing a cyclopropane ring-bearing compound of the formula (I) in which R 1 and R 2 are independently selected from C 1 -C 10 alky], optionally substituted, or R 1 and R 2 together with the bonds linking them to the cyclopropane ring, form a monocyclic or bicyciic ring system, which may comprise at least one hetero-atom, comprising the reaction of a compound of formula (II) in which R 1 and R 2 have the significances hereinabove defined, with a compound of formula (III) in which X is selected a nucieofuge selected from halides and pseudohalides and Y is an electro flige selected from boranes and borates, in the presence of a metal catalyst complex selected from those that a useful for catalytic cyclopropanation and those useful for catalyzing Heck coupling. The method prov ides a particularly easy and non-hazardous method of cyclopropanation.
摘要:
Disclosed are methods of purifying the compound (20R)-19-nor-24- difluoro-1α,25-dihydroxyvitamin D 3 to obtain the compound in crystalline form. The methods typically include the steps of dissolving a product containing the compound in a solvent comprising hexane and 2-propanol, cooling the solvent and dissolved product below ambient temperature for a sufficient amount of time to form a precipitate of crystals, and recovering the crystals.
摘要:
The present invention relates to fungicidal N-bicycloalkyl and N-tricycloalkyl pyrazole-4-(thio)carboxamide derivatives of formula (I), wherein . T represents 0 or S; . n represents 0 or 1; and . B represents where the bond marked by * is attached to the (CZ2Z3)n-N amide moiety, their process of preparation and intermediate compounds for their preparation, their use as fungicides, particularly in the form of fungicidal compositions and methods for the control of phytopathogenic fungi of plants using these compounds or their compositions.
摘要:
Compounds of formula I are provided where X1, X2 and X3 are independently selected from H or hydroxy protecting groups. Such compounds may be used in preparing pharmaceutical compositions and are useful in treating a variety of biological conditions.
摘要:
This invention discloses N-cyclopropyl-(20R)-2 -methylene-19,26,27-trinor-25-aza-vitamin D analogs, and specifically N-cyclopropyl-(20R)-2-methylene-19,26,27-trinor-25-aza-1α-hydroxyvitamin D 3 and pharmaceutical uses therefor. This compound exhibits relatively high binding activity and pronounced activity in arresting the proliferation of undifferentiated cells and inducing their differentiation to the monocyte thus evidencing use as an anti-cancer agent especially for the treatment or prevention of leukemia, colon cancer, breast cancer, skin cancer or prostate cancer.
摘要:
This invention discloses 22-haloacetoxy-homopregnacalciferol analogs and specifically 22-bromoacetoxy-homopregnacalciferol and pharmaceutical uses therefor. This compound exhibits relatively little calcemic activity and does not promote cellular differentiation of HL-60 leukemia cells, but rather kills the cells. This cell death activity is found in small cell lung carcinoma also, but not in prostate cancer cells. This compound thus causes specific cell death in the absence of changes in calcium levels and without general toxicity in an animal. Therefore it might serve as a useful therapy for treatment of some forms of cancer, such as leukemia and lung cancer.
摘要:
Embodiments in accordance with the present invention provide for norbornane-type ballast materials, norbornane-type photoactive compounds derived from such ballast materials and alkali-soluble positive-tone polymer compositions that encompass such norbornane-type photoactive compounds and one of a PBO or PNB resin.