Method for producing thiolane skeleton-type glycoconjugate, and thiolane skeleton-type glycoconjugate

A compound represented by any one of the following General Formulas (II-3) to (II-11), (II-13) and (II-14),

• wherein, in General Formulas (II-3) to (II-11), (II-13) and (II-14), R1 represents a hydrogen atom or an acyl group, each of R2a and R3a independently represents an alkyl group or an aryl group, and R5 represents an alkyl group or an aryl group, R2b represents —CH2—Ar, an allyl group, —C(═O)OCH2—Ar, or an allyloxycarbonyl group, here, Ar represents an aryl group, and moreover, the direct bond represented by a dashed line having a constant thickness which is bonded to a thiolane ring is positioned on any one of an α-side or a β-side.

A compound represented by any one of the following General Formula (II-1A′), (II-1B), (II-2A), (II-2B′), (II-3), (II-6B), (II-9), (II-13′), and (II-14′),

• wherein, in General Formulas (II-1A′), (II-1B), (II-2A), (II-2B′), (II-3), (II-6B), (II-9), (II-13′), and (II-14′), each of R1, R1b, and R1c independently represents a hydrogen atom or an acyl group, each of R2a and R3a independently represents an alkyl group or an aryl group, R2b represents —CH2—Ar, an allyl group, —C(═O)OCH2—Ar, or an allyloxycarbonyl group, here, Ar represents an aryl group, each of R5, R5b, R5c, R5d, and R5e independently represents an alkyl group or an aryl group, and here, in a case where R1b and R1c are acetyl groups, R5b is an aryl group, and R5c is an aryl group substituted with an a substituent.