The present invention is directed to compounds of the formula [INSERT CHEMICAL STRUCTURE HERE}] wherein all substituents are defined herein, as well as pharmaceutically acceptable compositions comprising compounds of the invention and methods of using said compositions in the treatment of various disorders.

##STR00001##

Disclosed are an intermediate of Eribulin and a preparation method therefor. In particular, disclosed are compounds as represented by formula II, formula III and formula V and a preparation method therefor. Ar is C.sub.1-10 alkyl substituted, alkyloxy substituted or unsubstituted aryl; R.sup.1 and R.sup.2 is an acetal protecting group or a thioacetal protecting group; R.sup.3 is hydrogen or a hydroxyl protecting group; and X is halogen or a leaving group. The preparation method therefor has the advantages of mild reaction conditions, high selectivity, easy purification, low synthesis cost and the like, being suitable for large scale production. ##STR00001##

Disclosed are an intermediate of Eribulin and a preparation method therefor. In particular, disclosed are compounds as represented by formula II, formula III and formula V and a preparation method therefor. Ar is C.sub.1-10 alkyl substituted, alkyloxy substituted or unsubstituted aryl; R.sup.1 and R.sup.2 is an acetal protecting group or a thioacetal protecting group; R.sup.3 is hydrogen or a hydroxyl protecting group; and X is halogen or a leaving group. The preparation method therefor has the advantages of mild reaction conditions, high selectivity, easy purification, low synthesis cost and the like, being suitable for large scale production. ##STR00001##

Provided herein are synthetic compounds useful for inhibiting bacterial growth and uses thereof. Also provided are pharmaceutical compositions. The compounds and pharmaceutical compositions are useful for inhibiting growth of a bacterium or treating or preventing a bacterial infection.

Provided herein are synthetic compounds useful for inhibiting bacterial growth and uses thereof. Also provided are pharmaceutical compositions. The compounds and pharmaceutical compositions are useful for inhibiting growth of a bacterium or treating or preventing a bacterial infection.

An invert oil-based mud (OBM) may include an oleaginous continuous phase, an aqueous internal phase, and an emulsifier. The emulsifier may include one or more of the group consisting of epoxidized methyl oleate, epoxidized methyl linoleate, and epoxidized methyl α-linolenate. The invert OBM may contain the emulsifier in an amount of the range of 0.1 to 10 wt. % (weight percent), relative to the total weight of the OBM.

An invert oil-based mud (OBM) may include an oleaginous continuous phase, an aqueous internal phase, and an emulsifier. The emulsifier may include one or more of the group consisting of epoxidized methyl oleate, epoxidized methyl linoleate, and epoxidized methyl α-linolenate. The invert OBM may contain the emulsifier in an amount of the range of 0.1 to 10 wt. % (weight percent), relative to the total weight of the OBM.

The present invention discloses novel indolylkojyl compounds of formula 1 The invention also provides a one pot, green chemistry method for preparation of indolylkojyl compounds. The compounds of the present invention are selectively toxic towards human breast cancer cells and inhibit tumor growth as well as lung metastasis. The compounds also potentiate the effect of anticancer drugs. ##STR00001##

Provided is the use of or compositions or formulations comprising Burkholderia species, filtrate, supernatant, extract, pesticidally active compound or metabolite derived therefrom as an insecticide, particularly against infestation of Corn Rootworm larvae, and/or as crop yield enhancer.

Provided is the use of or compositions or formulations comprising Burkholderia species, filtrate, supernatant, extract, pesticidally active compound or metabolite derived therefrom as an insecticide, particularly against infestation of Corn Rootworm larvae, and/or as crop yield enhancer.