Structures of Us-7 and Us-8: a new type of oxindole alkaloids isolated fromUncaria attenuata Korth

Norio Aimi,Toshikazu Shimizu,Hiroyuki Sada,Hiromitsu Takayama,Shin-ichiro Sakai,Sumphan Wongseripipatana,Dhavadee Ponglux

Structures of Us-7 and Us-8: a new type of oxindole alkaloids isolated fromUncaria attenuata Korth

1997

Norio Aimi
Toshikazu Shimizu
Hiroyuki Sada
Hiromitsu Takayama
Shin-ichiro Sakai
Sumphan Wongseripipatana
Dhavadee Ponglux

Novel D-seco corynanthe-type oxindole alkaloids Us-7 1 and Us-8 2 have been isolated from Uncaria attenuata Korth. Their structures have been deduced by detailed analysis of their spectroscopical and chiroptical properties.

Keywords:

Uncaria attenuata
Oxindole
Organic chemistry
Attenuata
Stereochemistry
Chemistry

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