摘要:
The present invention is directed to crystalline polymorphs of benfotiamine, its methods of preparation and its use thereof. Five crystalline polymorphs of benfotiamine are designated as crystalline forms A, B, C, D and E, and may be distinguished by their respective patterns of X-ray powder diffraction (XRPD), differential scanning calorimetry (DSC), infrared spectroscopy (IR), raman spectroscopy, moreover by their diverse preparing process. The crystalline polymorphs of the present invention are useful as they act in treating Vitamin B1 deficiency, metabolic disorders, mental illness and disorders, diabetes complications, neurodegerative diseases. Further the present invention is a process for preparing and transforming diverse crystalline form of benfotiamine through different synthesis routes and varied solvents and combinations. The crystalline polymorphs of the present invention are basically pure. The present invention not only provides new crystalline forms of benfotiamine, but also provides its new solvates, especially hydrates.
摘要:
Compounds of formula I, N-oxides or salts, thereof ##STR1## in which q is 0, 1 or 2A is CH and D is N.sup.+ R.times.1/n Q.sup.n- or A is N and D is N.sup.+ R.times.1/n Q.sup.n- or A is CH or N and D is Nor A is N.sup.+ R.times.1/n Q.sup.n- and D is N, R is CR.sup.6 R.sup.7 D.sup.a R.sup.8,Q.sup.n- is an inorganic or organic anion, n being 1, 2, 3 or 4;X is NH, O or S(O).sub.q, (q is 0, 1 or 2); and the R groups have various meanings as defined in the claims are useful pesticidal, especially insecticidal activity.
摘要:
The present invention relates to quaternary nitrogen-containing phosphonate compounds, and the pharmaceutically-acceptable salts and esters thereof and having the general structure: ##STR1## wherein R.sup.1, R.sup.2, R.sup.5 and R.sup.8 are defined in claim 1, m and n are integers from 0 to 10; m+n is from 0 to 10;Z is a saturated, unsaturated, or aromatic, monocyclic or polycyclic carbocycle or monocyclic or polycyclic heterocycle containing one or more heteroatoms selected from O, S, or N, wherein at least one heteroatom is a quaternary nitrogen atom;R is COOH; PO.sub.3 H.sub.2 ; SO.sub.3 H; or P(O)(OH)R.sub.4, wherein R.sub.4 is substituted or unsubstituted alkyl of 1-8 carbon atoms;The present invention further relates to pharmaceutical compositions containing a safe and effective amount of a compound of the present invention, and pharmaceutically-acceptable excipients. Finally, the present invention relates to methods for treating or preventing pathological conditions characterized by abnormal calcium and phosphate metabolism such as osteoporosis, rheumatoid arthritis, and osteoarthritis in humans or other mammals and to methods for treating or preventing dental calculus, plaque and gingivitis.
摘要:
The present invention relates to novel heterocycle-substituted diphosphonic acids, and the pharmaceutically-acceptable salts and esters thereof, in which the diphosphonate-substituted carbon atom moiety is attached to a carbon atom in a nitrogen-containing six membered ring heterocycle, preferably a piperidine ring. The heterocycle-substituted diphosphonic acid compounds have the general structure: ##STR1## wherein Z is a nitrogen-containing six membered ring heterocycle moiety selected from piperidinyl, diazinyl and triazinyl; m, n and m+n are from 0 to 10; Q is a covalent bond or a moiety selected from oxygen, sulfur or nitrogen; and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are substituent groups.The present invention further relates to pharmaceutical compositions containing these novel compounds. Finally this invention relates to methods for treating or preventing diseases characterized by abnormal calcium and phosphate metabolism by utilizing a compound or pharmaceutical composition of the present invention.
摘要:
A phosphonic acid derivative which is useful for medically treating hyperlipemia, represented by the following general formula (I) or a pharmacologically acceptable salt thereof: ##STR1## Representative example of the compound according to the present invention is one represented by the following formula: ##STR2##
摘要:
Compounds of formula ##STR1## wherein R, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and n have the meanings reported in the description are described. The compounds of formula I are endowed with a dual ACE-inhibitory and NEP-inhibitory activity and are useful in the treatment of cardiovascular diseases.
摘要:
Pharmaceutical compositions, useful for treating abnormal calcium and phosphate metabolism, which contain geminal-diphosphonic acid compounds; and a method of treating diseases characterized by abnormal calcium and phosphate metabolism utilizing these pharmaceutical compositions.