The invention relates to a drug conjugate including a drug and a plant steroid. The drug conjugate may target the drug for intestinal cell delivery, and thus may be used to treat diseases, including intestinal diseases, or to affect intestinal metabolism. The invention therefore also relates to treating intestinal diseases and affecting intestinal metabolism with the drug conjugate.

The present invention discloses a process for the preparation of 16, 17-acetals of pregnane derivatives having formula I ##STR00001##
wherein each substituent is independently selected from; R.sub.1 is H or CH.sub.3; R.sub.2 is C.sub.1-C.sub.6 linear or branched alkyl, alkynyl group or cycloalkyl group; aryl or heteroaryl group; or R.sub.1 and R.sub.2 combine to form saturated, unsaturated C.sub.3-C.sub.6 cyclic or heterocyclic ring; R.sub.3 and R.sub.4 are same or different and each independently represents H or halogen; R.sub.5 is OH or OCOR wherein R represents H or C.sub.1-C.sub.6 linear, branched or cyclic alkyl group that may be substituted.

The invention relates to compounds of formula (I), wherein R.sup.1, R.sup.2, Y, R.sup.4 and R.sup.5b are as defined herein. The compounds are intermediates in the synthesis of synthetic bile acids.

##STR00001##

This invention provides a method of synthesizing new active compounds for pharmaceutical uses including cancer treatment, wherein the cancers comprise breast, leukocytic, liver, ovarian, bladder, prostatic, skin, bone, brain, leukemia, lung, colon, CNS, melanoma, renal, cervical, esophageal, testicular, spleenic, kidney, lymphatic, pancreatic, stomach and thyroid cancers. This invention is an anti-adhesion therapy which uses the compound as a mediator or inhibitor of adhesion proteins and angiopoietins. It inhibits excess adhesion and inhibits cell attachment. It modulates angiogenesis. The compounds also use as mediator of cell adhesion receptor, cell circulating, cell moving and inflammatory diseases. The compounds are attached with angeloyl, acetyl, tigloyl, senecioyl, Crotonoyl, 3,3-Dimethylartyloyl, Cinnamoyl, Pentenoyl, Hexanoyl, benzoyl, Ethylbutyryl, benzoyl, dibenzoyl, alkanoyl, alkenoyl, benzoyl alkyl substituted alkanoyl, ethanoyl, propanoyl, propenoyl, butanoyl, butenoyl, pentanoyl, hexenoyl, heptanoyl, heptenoyl, octanoyl, octenoyl, nonanoyl, nonenoyl, decanoyl, decenoyl, propionyl, 2-propenoyl, 2-butenoyl, Isobutyryl, 2-methylpropanoyl, 2-ethylbutyryl, ethylbutanoyl, 2-ethylbutanoyl, butyryl, (E)-2,3-Dimethylacryloyl, (E)-2-Methylcrotonoyl, 3-cis-Methyl-methacryloyl, 3-Methyl-2-butenoyl, 3-Methylcrotonoyl, 4-Pentenoyl, (2E)-2-pentenoyl, Caproyl, 5-Hexenoyl, Capryloyl, Lauroyl, Dodecanoyl, Myristoyl, Tetradecanoyl, Oleoyl, OC(2-18) Acyl. ##STR00001##

The invention provides an enrichment method of Ergosterol peroxide from sporoderm-broken Ganoderma lucidum spore powder, comprising the steps of preparing crude extract containing Ergosterol peroxide, purification by medium pressure preparative chromatography, purification by simulated moving-bed, and recrystallization. The operation of this invention is simple and stable, with higher yield and low cost, suitable for industrial-scale production.

The present invention provides bacterial ATP synthase inhibitors such as a compound of formula (I):

##STR00001##

There are provided compositions and kits using such compounds and inhibitors.

The present invention further provides method of preparing nanocrystals of a hydrophobic therapeutic agent such as fluticasone or triamcinolone, pharmaceutical compositions (e.g., topical or intranasal compositions) thereof and methods for treating and/or preventing the signs and/or symptoms of disorders such as blepharitis, meibomian gland dysfunction or skin inflammation or a respiratory disease (e.g., asthma).

The present disclosure is generally directed to neuroactive 13, 17-substituted steroids as referenced herein, and pharmaceutically acceptable salts thereof, for use as, for example, an anesthetic, and/or in the treatment of disorders relating to GABA function and activity. The present disclosure is further directed to pharmaceutical compositions comprising such compounds.

Described herein protein steroid conjugates that are useful, for example, for the target-specific delivery of glucocorticoids (GCs) to cells.

The invention relates to a synthesis of cholesterol; a ring opening step of the compound of formula (I) and subsequent activation and reduction step yielding cholesterol. The inventions relates also to intermediates achieved during said synthesis.