Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A novel cyclization reaction is described which affords readily manipulable 3(2H)-dihydrofuranone ethylene ketals, useful in the total synthesis of an ascofuranone model, bullatenone, and muscarine analogs. ... US 3,873,529 (to Chugai Pharmaceutical Co., Ltd.) 25 Mar., 1975.
![(E)-6,6-dimethyl-8-(α-methylstyryl)-1,4,7-trioxaspiro[4.4]nonane结构式](https://image.chemsrc.com/caspic/328/81520-51-6.png)
![1-(6,6-dimethyl-1,4,7-trioxaspiro[4.4]nonan-8-yl)ethanone结构式](https://image.chemsrc.com/caspic/211/81476-90-6.png)
