The subject matter disclosed generally relates to phenethylamines or cathinones covalently bound to a chemical moiety in a prodrug form. The presently described technology allows slow/sustained/controlled delivery of the parent phenethylamines or cathinones into the blood system in a manner that increase the duration of therapeutic efficacy, ease of application, patient compliance and/or a combination of these characteristics when administered, in particular, orally. Additionally, the described technology allows gradual release of the parent phenethylamines or cathinones over an extended period of time thereby eliminating spiking of drug levels which lessen cardiovascular stress, addiction/abuse potential and/or other common stimulant side effects associated with psychoactive compounds.

The subject matter disclosed generally relates to phenethylamines or cathinones covalently bound to a chemical moiety in a prodrug form. The presently described technology allows slow/sustained/controlled delivery of the parent phenethylamines or cathinones into the blood system in a manner that increase the duration of therapeutic efficacy, ease of application, patient compliance and/or a combination of these characteristics when administered, in particular, orally. Additionally, the described technology allows gradual release of the parent phenethylamines or cathinones over an extended period of time thereby eliminating spiking of drug levels which lessen cardiovascular stress, addiction/abuse potential and/or other common stimulant side effects associated with psychoactive compounds.

The present disclosure relates generally to the field of synthetic organic chemistry. More specifically, the disclosure is directed to a continuous flow process for synthesis of azides from alcohols and peroxides, wherein the process comprises azidation with trimethylsilyl azide and a catalyst Amberlyst-15. It is a non-hazardous, mild and controlled reaction giving good yields of azides. The azides can be further employed for synthesis of medicinally and industrially useful chemicals.

Provided herein are compounds having a structure of formula (A), or pharmaceutically acceptable salts thereof, wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.d and n are described herein. Also provided herein are compositions comprising compounds of Formula (A) and methods of using compound of Formula (A) in treating, inhibiting, and/or preventing disease such as cancers (e.g., prostate cancer).

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