Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of bacterial type 1 signal peptidases SpsB and/or LepB, an essential protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.

The present disclosure relates to novel synthetic method of making 1, 4-diazo N-heterocycles via intermolecular amphoteric diamination of allenes, and to the compounds made by the novel synthetic method.

The present disclosure relates to novel synthetic method of making 1, 4-diazo N-heterocycles via intermolecular amphoteric diamination of allenes, and to the compounds made by the novel synthetic method.

Methods for making an arylomycin ring of formula t

##STR00001##

or salts or solvates thereof, wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.5, R.sup.10 and Pg.sup.1 are as defined herein.

The present invention provides, in certain aspects, novel syringolin analogues, In certain embodiments, the compounds of the invention are proteasome inhibitors, In other embodiments, the compounds treat or prevent a cancer such as, but not limited to, leukemia in a subject,

The present invention provides, in certain aspects, novel syringolin analogues, In certain embodiments, the compounds of the invention are proteasome inhibitors, In other embodiments, the compounds treat or prevent a cancer such as, but not limited to, leukemia in a subject,

A hydrogen sulfide donor in an organic salt form and a preparation method thereof. The hydrogen sulfide donor exists as a salt formed by organic compounds with an alkaline motif and hydrogen sulfide with weak acidity. The hydrogen sulfide donor features with a simple structure, and an easy preparation method. Moreover, hydrogen sulfide donors in different forms can be prepared according to research and development needs. After the hydrogen sulfide donor enters an organism, the process of in vivo dissociation and hydrogen sulfide supply is simple, rapid, and effective, and there is no requirement for enzyme or any other complicated condition, and thus, the hydrogen sulfide donor has a great application prospect and value.

A hydrogen sulfide donor in an organic salt form and a preparation method thereof. The hydrogen sulfide donor exists as a salt formed by organic compounds with an alkaline motif and hydrogen sulfide with weak acidity. The hydrogen sulfide donor features with a simple structure, and an easy preparation method. Moreover, hydrogen sulfide donors in different forms can be prepared according to research and development needs. After the hydrogen sulfide donor enters an organism, the process of in vivo dissociation and hydrogen sulfide supply is simple, rapid, and effective, and there is no requirement for enzyme or any other complicated condition, and thus, the hydrogen sulfide donor has a great application prospect and value.

A new family of highly charged crystalline microporous metallophosphate molecular sieves designated MeAPO-81 has been synthesized. These metallophosphates are represented by the empirical formula of:
R.sup.p+.sub.rA.sup.+.sub.mM.sup.2+.sub.xE.sub.yPO.sub.z
where A is an alkali metal such as potassium, R is at least one quaternary ammonium cation of which one must be a cyclic diquaternary organoammonium cation such as N,N,N,N-tetramethyl-N,N-butano-1,6-hexanediammonium, M is a divalent metal such as zinc and E is a trivalent framework element such as aluminum or gallium. The MeAPO-81 family of materials has the BPH topology. The MeAPO-81 family of materials is among the first MeAPO-type molecular sieves to be stabilized by combinations of alkali and organoammonium cations, enabling unique high charge density compositions. The MeAPO-81 family of molecular sieves has catalytic properties for carrying out various hydrocarbon conversion processes and separation properties for separating at least one component.

A new family of highly charged crystalline microporous metallophosphate molecular sieves designated MeAPO-81 has been synthesized. These metallophosphates are represented by the empirical formula of:
R.sup.p+.sub.rA.sup.+.sub.mM.sup.2+.sub.xE.sub.yPO.sub.z
where A is an alkali metal such as potassium, R is at least one quaternary ammonium cation of which one must be a cyclic diquaternary organoammonium cation such as N,N,N,N-tetramethyl-N,N-butano-1,6-hexanediammonium, M is a divalent metal such as zinc and E is a trivalent framework element such as aluminum or gallium. The MeAPO-81 family of materials has the BPH topology. The MeAPO-81 family of materials is among the first MeAPO-type molecular sieves to be stabilized by combinations of alkali and organoammonium cations, enabling unique high charge density compositions. The MeAPO-81 family of molecular sieves has catalytic properties for carrying out various hydrocarbon conversion processes and separation properties for separating at least one component.