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【结 构 式】

【分子编号】45427

【品名】[(4S)-4-benzyl-2-thioxo-1,3-oxazolidin-3-yl][(1S,2R)-2-hydroxy-3-cyclopenten-1-yl]methanone

【CA登记号】

【 分 子 式 】C16H17NO3S

【 分 子 量 】303.38192

【元素组成】C 63.34% H 5.65% N 4.62% O 15.82% S 10.57%

与该中间体有关的原料药合成路线共 2 条

合成路线1

该中间体在本合成路线中的序号:(XIX)

Alternatively, the (R,R)-5-(hydroxymethyl)-2-cyclopenten-1-ol (VII) can also be obtained as follows: The condensation of the chiral oxazolidinethione (XV) with the pentenoic anhydride (II) by means of n-BuLi in THF gives the N-pentenoyloxazolidinethione (XVI), which is condensed with crotonaldehyde (XVII) catalyzed by TiCl4 and (-)-spartein in dichloromethane, yielding the chiral adduct (XVIII). The ring-closing metathesis of (XVIII) by means of a Ru catalyst in dichloromethane affords the chiral cyclopentenol derivative (XIX), which is reduced to the target diol (VII) by means of LiBH4 in THF.

1 Crimmins, M.T.; et al.; An efficient, general asymmetric synthesis of carbocyclic nucleosides: Application of an asymmetric aldol/ring-closing metathesis strategy. J Org Chem 2000, 65, 25, 8499.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(II) 17666 1,1-dimethylpropionic 4-pentenoic anhydride C10H16O3 详情 详情
(VII) 17671 (1R,5R)-5-(hydroxymethyl)-2-cyclopenten-1-ol C6H10O2 详情 详情
(XV) 45425 (4S)-4-benzyl-1,3-oxazolidine-2-thione C10H11NOS 详情 详情
(XVI) 41704 1-[(4R)-4-benzyl-2-thioxo-1,3-oxazolidin-3-yl]-4-penten-1-one C15H17NO2S 详情 详情
(XVII) 22517 (E)-2-butenal 4170-30-3 C4H6O 详情 详情
(XVIII) 45426 (2S,3R,4E)-2-allyl-1-[(4S)-4-benzyl-2-thioxo-1,3-oxazolidin-3-yl]-3-hydroxy-4-hexen-1-one C19H23NO3S 详情 详情
(XIX) 45427 [(4S)-4-benzyl-2-thioxo-1,3-oxazolidin-3-yl][(1S,2R)-2-hydroxy-3-cyclopenten-1-yl]methanone C16H17NO3S 详情 详情

合成路线2

该中间体在本合成路线中的序号:(XXIII)

Alternatively, 5(R)-(hydroxymethyl)-2-cyclopenten-1(R)-ol (VII) can also be obtained as follows: Acylation of the chiral oxazolidinethione (XIX) with the mixed anhydride (II) by means of BuLi in THF gives the N-pentenoyl-oxazolidinethione (XX), which by condensation with crotonaldehyde (XXI) catalyzed by TiCl4 and (­)-spartein in dichloromethane yields the chiral adduct (XXII). The ring-closing metathesis of (XXII) by means of the ruthenium catalyst in dichloromethane affords the chiral cyclopentenol derivative (XXIII), which is reduced to the target diol (VII) by means of LiBH4 in THF.

1 Crimmins, M.T.; et al.; An efficient, general asymmetric synthesis of carbocyclic nucleosides: Application of an asymmetric aldol/ring-closing metathesis strategy. J Org Chem 2000, 65, 25, 8499.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(II) 17666 1,1-dimethylpropionic 4-pentenoic anhydride C10H16O3 详情 详情
(VII) 17671 (1R,5R)-5-(hydroxymethyl)-2-cyclopenten-1-ol C6H10O2 详情 详情
(XIX) 45425 (4S)-4-benzyl-1,3-oxazolidine-2-thione C10H11NOS 详情 详情
(XX) 41704 1-[(4R)-4-benzyl-2-thioxo-1,3-oxazolidin-3-yl]-4-penten-1-one C15H17NO2S 详情 详情
(XXI) 22517 (E)-2-butenal 4170-30-3 C4H6O 详情 详情
(XXII) 45426 (2S,3R,4E)-2-allyl-1-[(4S)-4-benzyl-2-thioxo-1,3-oxazolidin-3-yl]-3-hydroxy-4-hexen-1-one C19H23NO3S 详情 详情
(XXIII) 45427 [(4S)-4-benzyl-2-thioxo-1,3-oxazolidin-3-yl][(1S,2R)-2-hydroxy-3-cyclopenten-1-yl]methanone C16H17NO3S 详情 详情
Extended Information