中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (2R,3S)-4-[(2S,4S,6R,8R,10S)-8-Benzyloxymethyl-10-(tert-butyl-diphenyl-silanyloxy)-4-methoxy-1,7-dioxa-spiro[5.5]undec-2-yl]-3-(tert-butyl-dimethyl-silanyloxy)-2-methyl-butyraldehyde | 262614-92-6 | C45H66O7Si2 | 775.186 |
—— | 1-[(2R,4S,6R,8S,10S)-8-[2-[(2-bromophenyl)methoxy]ethyl]-4-[tert-butyl(dimethyl)silyl]oxy-4-methyl-10-(2-trimethylsilylethoxymethoxy)-1,7-dioxaspiro[5.5]undecan-2-yl]butan-2-one | 262614-87-9 | C35H61BrO7Si2 | 729.94 |
—— | [(2R,4S,6R,8S,10S)-8-[2-[(2-bromophenyl)methoxy]ethyl]-4-[tert-butyl(dimethyl)silyl]oxy-4-methyl-10-(2-trimethylsilylethoxymethoxy)-1,7-dioxaspiro[5.5]undecan-2-yl]methanol | 262614-99-3 | C32H57BrO7Si2 | 689.875 |
—— | 2-[(2R,4S,6R,8S,10S)-8-[2-[(2-bromophenyl)methoxy]ethyl]-4-[tert-butyl(dimethyl)silyl]oxy-4-methyl-10-(2-trimethylsilylethoxymethoxy)-1,7-dioxaspiro[5.5]undecan-2-yl]acetaldehyde | 1025954-24-8 | C33H57BrO7Si2 | 701.886 |
—— | [(Z)-1-[(2R,4S,6R,8S,10S)-8-[2-[(2-bromophenyl)methoxy]ethyl]-4-[tert-butyl(dimethyl)silyl]oxy-4-methyl-10-(2-trimethylsilylethoxymethoxy)-1,7-dioxaspiro[5.5]undecan-2-yl]but-2-en-2-yl]oxy-trimethylsilane | 262614-93-7 | C38H69BrO7Si3 | 802.122 |
—— | (2R,4S,6R,8S,10S)-8-[2-[(2-bromophenyl)methoxy]ethyl]-2-[(4-methoxyphenyl)methoxymethyl]-4-methyl-10-(2-trimethylsilylethoxymethoxy)-1,7-dioxaspiro[5.5]undecan-4-ol | 262614-84-6 | C34H51BrO8Si | 695.764 |
—— | (2R,6R,8S,10S)-8-[2-[(2-bromophenyl)methoxy]ethyl]-2-[(4-methoxyphenyl)methoxymethyl]-10-(2-trimethylsilylethoxymethoxy)-1,7-dioxaspiro[5.5]undecan-4-one | 262614-83-5 | C33H47BrO8Si | 679.721 |
Enantioselective approaches to the construction of four complex building blocks of the structurally intricate marine macrolide known as spongistatin 1 are presented. The first phase of the synthetic effort relies on a practical approach to a desymmetrized, enantiomerically pure spiroketal ring system incorporating rings A and B. Concurrently, the C17–C28 subunit, which houses one-fifth of the stereogenic centers of the target in the form of rings C and D, was assembled via a composite of stereocontrolled aldol condensations. Once arrival at the entire C1–C28 sector had been realized, routes were devised to provide two additional highly functionalized sectors consisting of C29–C44 and C38–C51. A series of subsequent transformations including cyclization of the E ring and hydroboration to afford the