申请人:CIBA-GEIGY AG
公开号:EP0614906A1
公开(公告)日:1994-09-14
A compound of formula
where
R¹ is hydrogen or a protecting group Q;
R² is hydrogen, a C₁-C₈ aliphatic radical, a C₆-C₁₅ aromatic radical, a C₃-C₈ cycloaliphatic radical, a C₇-C₁₃ araliphatic radical, an alkali metal ion or an ammonium ion;
R³ and R⁴ are independently hydrogen, halogen or hydroxy;
R⁵ is C₆-C₁₀ aryloxythiocarbonyloxy, the C₆-C₁₀ aryl group being unsubstituted or substituted, or R⁵a;
R⁵a is hydrogen, fluorine, chlorine, hydroxy, -OR⁸, -OCOR⁸ or silyloxy substituted by three C₁-C₁₅ hydrocarbyl groups;
R⁶ is hydrogen, a C₁-C₁₀ aliphatic radical, a C₆-C₁₅ aromatic radical, a C₇-C₁₆ araliphatic radical, -COR⁹, -SO₂R⁹ or silyl substituted by three C₁-C₁₅ hydrocarbyl groups;
R⁷ is a monovalent nucleoside base radical, hydroxyl, -OR⁸ or -OCOR⁸, and and
R⁹ are independently a C₁-C₁₀ aliphatic radical, a C₃-C₈ cycloaliphatic radical, a C₆-C₁₅ aromatic radical or a C₇-C₁₆ araliphatic radical; or
R⁵ and the indicated R⁶O-together denote an isopropylidenedioxy group or R⁵ and R⁷ together denote an isopropylidenedioxy group, provided that when R⁵ and R⁷ together denote isopropylidenedioxy, R¹ R², R³ R⁴ and R⁶ are not all hydrogen.
式中的化合物
式中
R¹ 是氢或保护基 Q;
R² 是氢、C₁-C₈ 脂肪族基、C₆-C₁₅ 芳族基、C₃-C₈ 环脂族基、C₇-C₁₃ 芳族基、碱金属离子或铵离子;
R³ 和 R⁴ 独立地为氢、卤素或羟基;
R⁵ 是 C₆-C₁₀芳氧基硫代羰氧基,C₆-C₁₀ 芳基是未取代的或取代的,或 R⁵a;
R⁵a 是氢、氟、氯、羟基、-OR⁸、-OCOR⁸ 或被三个 C₁-C₁₅烃基取代的硅氧基;
R⁶ 是氢、C₁-C₁₀ 脂肪族基、C₆-C₁₅ 芳族基、C₇-C₁₆ 脂肪芳族基、-COR⁹、-SO₂R⁹ 或被三个 C₁-C₁₅ 烃基取代的硅氧基;
R⁷ 是一价核苷碱基、羟基、-OR⁸ 或 -OCOR⁸,以及
R⁹ 独立地是 C₁-C₁₀ 脂肪族基、C₃-C₈ 环脂肪族基、C₆-C₁₅ 芳族基或 C₇-C₁₆ 脂肪族基;或
R⁵ 和 R⁶O 共同表示异亚丙基二氧基,或 R⁵ 和 R⁷ 共同表示异亚丙基二氧基,但当 R⁵ 和 R⁷ 共同表示异亚丙基二氧基时,R¹ R²、R³ R⁴ 和 R⁶ 并非都是氢。