Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof. Further provided herein are methods for preparing a compound of formula (I), the method comprising contacting a compound of formula (III) with a compound of the following formula: R1-Y, in a solvent, in the presence of a palladium catalyst, wherein said contacting occurs in the presence of a base, wherein R1-R4, Y, the palladium catalyst and the base are as defined herein.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are methods for the preparation of substituted pyrazino[2,3-b]pyrazines of the formula (II): the method comprising contacting a compound of formula (VI): with R1—Y in a solvent, in the presence of a palladium catalyst, wherein said contacting occurs in the presence of a base, wherein R1-R3, Y, the palladium catalyst and the base are as defined herein.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof. Furthermore, provided herein are compounds having the following formulas (IV), (V), (VII) and (VIII): wherein R, R2, R3, R4, Hal and Hal2 are as defined herein, for preparation of the Heteroaryl Compounds.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Provided herein are Heteroaryl Compounds having the following structure: wherein R1-R4 are as defined herein, compositions comprising an effective amount of a Heteroaryl Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, neurodegenerative diseases, diabetes, obesity, neurological disorders, age-related diseases, or cardiovascular conditions, comprising administering an effective amount of a Heteroaryl Compound to a patient in need thereof.

Abstract: Compounds that modulate gene expression through the estrogen receptor (ER) are disclosed having the following structure, as well as pharmaceutical compositions containing the same: wherein R1, R2, R3, n and p are as defined here. Methods are also disclosed for modulating ER in cells and/or tissues expressing the same, such as bone, breast, prostate, uterus, CNS or the cardiovascular system. Methods for treating estrogen-related conditions are also disclosed, including conditions such as is breast cancer, osteoporosis, endometriosis, cardiovascular disease, hypercholesterolemia, prostatic hypertrophy, prostatic carcinomas, obesity, hot flashes, skin effects, mood swings, memory loss, and adverse reproductive effects associated with exposure to environmental chemicals or natural hormonal imbalances.

Abstract: Compounds that modulate gene expression through the estrogen receptor (ER) are disclosed having the following structure, as well as pharmaceutical compositions containing the same: wherein R1, R2, R3, n and p are as defined here. Methods are also disclosed for modulating ER in cells and/or tissues expressing the same, such as bone, breast, prostate, uterus, CNS or the cardiovascular system. Methods for treating estrogen-related conditions are also disclosed, including conditions such as is breast cancer, osteoporosis, endometriosis, cardiovascular disease, hypercholesterolemia, prostatic hypertrophy, prostatic carcinomas, obesity, hot flashes, skin effects, mood swings, memory loss, and adverse reproductive effects associated with exposure to environmental chemicals or natural hormonal imbalances.