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RT @JOC_OL: The regioselective opening of E-ring in spirostan sapogenins provides new dihydropyran derivatives. https://t.co/Iyg8QhgO09
RT @JOC_OL: The regioselective opening of E-ring in spirostan sapogenins provides new dihydropyran derivatives. https://t.co/Iyg8QhgO09
The regioselective opening of E-ring in spirostan sapogenins provides new dihydropyran derivatives. https://t.co/Iyg8QhgO09