The concise and divergent syntheses of the marine alkaloids (+)-tetradehydrohalicyclamine B and (−)-epi-tetradehydrohalicyclamine B are disclosed. Each synthesis requires ten steps and hinges on sever...

The concise and divergent syntheses of the marine alkaloids (+)-tetradehydrohalicyclamine B and (–)-epi-tetradehydrohalicyclamine B are disclosed. Each synthesis requires ten steps and hinge on severa...

Florida’s move on vaccine mandates will lead to avoidable illnesses and deaths.

The move halts a large slice of money for most universities and research institutions virtually overnight, imperiling vital research in everything from cancer to heart disease.

The protein crops known as lupins have been bred to accumulate low levels of antinutritional alkaloids, neglecting their potential as sources of valuable metabolites. Here, we engineered narrow-leafe....