Very few acetylenic compounds from marine organisms have been reported so far. Algae have proved to be a good source of halogenated products' among which a small group of ethers, characterized by a straight-chain C-15 carbon skeleton and a terminal enyne functionl,has been isolated. In the case of s
Two new acetylenic compounds from Chrysanthemum Boreale
✍ Scribed by Akihiko Matsuo; Yasuto Uchio; Mitsuru Nakayama; Shûichi Hayashi
- Book ID
- 104234915
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- French
- Weight
- 232 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
From the Compoeitae 2-(2,4-hexadiynylidene)-l,6-dioxaspiro[4.5ldecene-3(1) and its derivatives have been isolated by Bohlmann et al. 1) We have now isolated, in a course of our chemosystematic investigation on the Chrysanthemum native in Japan, two new acetylenic compounds from the root of Ch.boreaZe Makino (Japanese name Aburagiku) and elucidated the structures as di-acetoxy(I1) and hydroxy-isovaleryloxy(III) derivatives of the dioxaspiro[4.51decane.
📜 SIMILAR VOLUMES
## Abstract Two novel compounds, (9__R__)‐4‐methoxy‐9__H__‐fluorene‐2,5,9‐triol (**1a**) and 2,7‐dihydroxy‐8‐methoxyphenanthro[4,5‐__bcd__]pyran‐5(5__H__)‐one (**2**) were isolated from the stems of the orchid __Dendrobium chrysotoxum__ Lindl. Their structures were established spectroscopically, by
Two new compounds, corialins A (1) and B (2) were isolated from Coriaria nepalensis Wall. These new compounds were established as 7-hydroxy-3-[2,3-acetonide-(3-methylbutane)] coumarin (1) and 3-O-b-D-glucopyranosyl-3,4,5-trihydroxy-1-(3methyl-2-butenyl)-benzene (2), on the basis of 1D and 2D NMR tec