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Demands for medicines to treat existing, reemerging and new diseases will escalate and intellectual property rights and patent protection will be increasingly challenged.
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The amylose 1 was selectively converted into 2 without protection of the other hydroxyl groups by allylation at the all O-6 positions in excess base.
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In the ultrasonic field, stable silver colloids were produced by the reduction of AgNO3 with the protection of PVP using KBH4 or N2H4·H2O as reductant.
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In the synthesis of Compound A, the reactive processes used by us included the protection of amino group of lysine, acetylation, and intramolecular cyclizative condensation reaction.
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Benzoxycarbonyl chloride was selected as amino group protection agent, and the yield was elevated by replacing sodium bicarbonate with triethyl amide as the acid's neutralizer.
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