ALBAWABA Halloween is fast approaching, and 2024 is the perfect year to let kids' imaginations run wild with their costumes.

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A mycologist, before venturing into the woods, needs a knife, a hand lens and a field guide, Clair Burkum said Sunday as she began leading 11 mycology curious amateurs down the Indian Creek Nature ...

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戊烯基是一种疏水的五碳片段，在生物化学和天然产物化学中广泛存在。具有广泛药用价值的天然产品——多环聚戊烯基酰基间苯三酚（PPAPs），一直是多个合成研究的目标，但不对称地引入戊烯基已被证明是一个持久的挑战。 Ng等人报道了一种铜催化的方法，使不饱和酮戊酰化，从而获得具有高对映选择性的PPAP。该方法的关键是一种有机硼酸盐试剂，硼在一个有点违反直觉的位置。