Cyclopeptides from Polycarpon prostratum (Caryophyllaceae)

Two new cyclic peptides, polycarponin B and C (1, 2), were isolated from the whole plants of Polycarpon prostratum (Forssk.) Aschers. et Schwein. ex Aschers. By detailed spectroscopic analysis, their structures were determined as cyclo(-Gly(1)-Ile-Val(1)-Leu(1)-Val(2)-Gly(2)-Leu(2)-Pro) and cyclo(-Pro(1)-Thr-Leu(1)-Pro(2)-Pro(3)-Val-Leu(2)-Phe), respectively.

New Triterpenoid Saponins from Polycarpon prostratum (Caryophyllaceae)

Three new triterpenoid saponins, namely prostratosides A-C (1-3), were isolated from the whole plant of Polycarpon prostratum (Forssk.) Aschers. et Schwein. ex Aschers. By spectroscopic methods, their structures were determined as 3_O_{β_D_xylopyranosyl_(1→2)_β_D_glucopyranosyl_(1→4)_[β_D_glucopyranosyl_(1→2)]_α_L_arabinopyranoside}_22α_acetoxy_saikogenin G, 3_O_{β_D_xylopyranosyl_(1→2)_β_D_glucopyranosyl_(1→4)_[β_D_glucopyranosyl_(1→2)]_α_L_arabinopyranoside}_16α_hydroxy_22α_acetoxy_saikogenin E and 3_O_{β_D_xylopyranosyl_(1→2)_β_D_glucopyranosyl_(1→4)_[β_D_glucopyranosyl_(1→2)]_α_L_arabinopyranoside}_21β_acetoxy_saikogenin G, respectively.

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。