Abstract: A use of one or more of a Ginkgo biloba terpene lactone compound or a pharmaceutically acceptable salt, ester, hydrate, solvate, or isomer thereof, or any crystal form, racemate, or metabolite of same, or a mixture of same as an active ingredient in the preparation of drugs for the prevention and/or treatment of tremors, and healthcare products. The Ginkgo biloba terpene lactone compound and composition can both significantly improve the disease condition of essential tremor model mice; the ameliorating effect of a Ginkgo biloba terpene lactone B and bilobalide composition and a ginkgolide A, ginkgolide B, and ginkgolide C composition on the essential tremor model mice is close to that of the positive control drug propranolol hydrochloride. The disease condition of patients with essential tremors and patients with vascular tremors is significantly improved, and there have been no adverse reactions in clinical observations.

Abstract: The invention provides compounds of formula (I): and salts thereof, wherein R1, R2, R3, B, X, Y, and Z have any of the values defined herein. The invention also provides pharmaceutical compositions comprising a compound of formula (I) or a pharmaceutically acceptable salt thereof, processes for preparing compounds of formula (I) and salts thereof, intermediates useful for preparing compounds of formula (I) and salts thereof, and therapeutic methods for treating cancer using a compound of formula (I) or a pharmaceutically acceptable salt thereof.

Abstract: The invention provides compounds useful as anti-cancer agents.

Abstract: The invention provides compounds useful as anti-cancer agents.

Abstract: The present invention provides a method to prepare 2H-benzo[6]pyrans, such as the anti-HIV natural product daurichromenic acid (1a), by microwave-assisted tandem aldol reaction of a phenolic enolate followed by intramolecular SN2? type cyclization to form the 2H-benzo[6]pyran core structure.

Abstract: The present invention concerns methods for treating pancreatic cancers, leukemias, colon cancers, malignant gliomas and other brain tumors, and ovarian cancers which comprise providing to an individual compositions comprising an orsaponin such as OSW-1 or its derivatives such as 17-deoxyorsaponin. Various therapeutically useful derivatives of orsaponins are also described.

Abstract: The present invention provides a method to prepare 2H-benzo[6]pyrans, such as the anti-HIV natural product daurichromenic acid (1a), by microwave-assisted tandem aldol reaction of a phenolic enolate followed by intramolecular SN2′ type cyclization to form the 2H-benzo[6]pyran core structure.

Abstract: A process for preparing compounds of formula (1): including the convergent steps as defined in the specification, and wherein R groups have any of the values defined in the specification. The invention also provides processes and intermediates useful for preparing compounds of formula (1).

Abstract: A process for preparing compounds of formula (1): 1