RCAI-56 is a synthetic glycolipid exhibiting a potent antitumor activity by stimulation of natural killer T cells. Tetra-O-benzyl-α-carbagalactose, an important synthetic segment of RCAI-56, was stereoselectively synthesized from 1,4-dichloro-2-butene in… Click to show full abstract
RCAI-56 is a synthetic glycolipid exhibiting a potent antitumor activity by stimulation of natural killer T cells. Tetra-O-benzyl-α-carbagalactose, an important synthetic segment of RCAI-56, was stereoselectively synthesized from 1,4-dichloro-2-butene in nine steps, including the key step of organocatalytic asymmetric Diels–Alder reaction between acrolein and 1-benzyloxybutadiene.
               
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