A New Cyclopeptide from Polycarpon prostratum

A new cyclic peptide named polycarponin A, was isolated from the whole plants of Polycarpon prostratum. Its structure was determined by detailed spectroscopic analysis.

Three New Saikosaponin-like Compounds from Polycarpon prostratum

Three new saikosaponin-like compounds (named prostratoside F-H) were isolated from the whole plants of Polycarpon prostratum (Forssk.) Aschers. et Schwein. ex Aschers. By detailed spectroscopic analysis, their structures were determined as 13 beta, 28-epoxy-16-keto-22 alpha, 23-dihydroxyolean-11-en-3 beta -yl-alpha -L-arabinopyranoside, 13 beta, 28-epoxy-16-keto-23-hydroxy-olean-11-en-3 beta -yl-alpha -L-arabinopyranoside and 13 beta, 28-epoxy-16-keto-22 alpha -hydroxyolean-11-en-3 beta -yl-alpha -L-arabinopyranoside, respectively.

A Triterpenoid Saponin from Polycarpon prostratum

A new triterpenoid saponin, named prostratoside A. was isolated from the whole plants of Polycarpon prostratum. Its structure nas determined to be 3-O-{beta-D-xylopyranosyl- (1-->2)- beta-D-glucopranosyl-(1-->4)-[ beta- D-plucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl}- 22 alpha- acetoxy saikogenin G by spectroscopic methods..

多荚草皂甙D和E的结构

从石竹科植物多荚草（Ｐｏｌｙｃａｒｐｏｎ ｐｒｏｓｔｒａｔｕｍ （Ｆｏｒｓｓｋ）Ａｓｃｈｅｒｓ.ｅｔ Ｓｃｈｗｅｉｎ．ｅｘ Ａｓｃｈｅｒｓ）的 全草中分离得到了２个新的柴胡皂甙类化合物：ｐｒｏｓｔｒａｔｏｓｉｄｅＤ和 Ｅ。它们的结构通过波谱方法分别鉴定为３－Ｏ－｛β－Ｄ－ｘｙｌｏｐｙｒａｎｏｓｙｌ－（１→２）－β－Ｄ－ｇｌｕｃｏｐｙｒａｎｏｓｙｌ－（１→４）－［β－Ｄ－ｇｌｕｃｏｐｙｒａｎｏｓｙｌ－（１→２）－ａ－Ｌ－ａｒａｂｉｎｏｐｙｒａｎｏｓｉｄｅ｝ － ｓａｉｋｏｇｅｎｉｎＤ和３－Ｏ－｛β－Ｄ－ｘｙｌｏｐｙｒａｎｏｓｙｌ－（１→２）－β－Ｄ－ｇｌｕｃｏｐｙｒａｎｏｓｙｌ－（１→４）－［β－Ｄ－ｇｌｕｃｏｐｙｒａｎｏｓｙｌ－（１→２）］－ａ－Ｌ－ａｒａｂｉｎｏｐｙｒａ－ｎｏｓｉｄｅ｝－ｓａｉｋｏｇｅｎｉｎ Ｇ。

多荚草中的新环肽(英文)

从石竹科植物多荚草 (Polycarponprostratum (Forssk .)Aschers.etSchwein .exAschers)中分离得到 2个新的环肽化合物polycarponinB和C (1,2 )。它们的结构通过波谱方法分别鉴定为 :cyclo(_Gly1_Ile_Val1_Leu1_Val2 _Gly2 _Leu2 _Pro)和cyclo(_Pro1_Thr_Leu1_Pro2 _Pro3_Val_Leu2 _Phe)。

多荚草中的两个新单糖苷(英文)

目的 对石竹科植物多荚草Polycarponprostratum的化学成分进行研究。 方法 采用硅胶柱层析进行分离和纯化 ,通过波谱分析进行结构鉴定。结果 从其乙酸乙酯萃取部分分离得到了两个新的柴胡皂苷类化合物 :prostratosidesI和J。通过波谱方法分别鉴定其结构为 3 O α L arabinopyranosyl 16α hydroxy 2 2α acetoxy saikogeninE (Ⅰ )和 3 O α L arabinopyranosylsaikogeninF (Ⅱ )。 结论 化合物Ⅰ和Ⅱ均为新化合物。

多荚草中的新三萜皂甙(英文)

从石竹科植物多荚草 (Polycarponprostratum (Forssk .)Aschers.etSchwein .exAschers)中分离得到 3个新的柴胡皂甙类化合物 :prostratosideA～C (1～ 3)。它们的结构通过波谱方法分别鉴定为 :3_O_{ β_D_xylopyranosyl_(1→ 2 )_β_D_glucopyranosyl_(1→ 4)_[β_D_glucopyranosyl_(1→ 2 ) ]_α_L_arabinopyranoside}_2 2α_acetoxy_saikogeninG ,3_O_{ β_D_xylopyra nosyl_(1→ 2 )_β_D_glucopyranosyl_(1→ 4)_[β_D_glucopyranosyl_(1→ 2 ) ]_α_L_arabinopyranoside}_16α_hydroxy_2 2α_acetoxy_saiko geninE和 3_O_{ β_D_xylopyranosyl_(1→ 2 )_β_D_glucopyranosyl_(1→ 4)_[β_D_glucopyranosyl_(1→ 2 ) ]_α_L_arabinopyranoside}_2 1β_acetoxy_saikogeninG .