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The A ring is similar to a resorcinol moiety while the B ring is similar to a catechol moiety. There are two chiral centers on the molecule on carbons 2 and 3. Therefore, it has four diastereoisomers. Two of the isomers are in trans configuration and are called catechin and the other two are in cis configuration and are called epicatechin.
Epigallocatechin and gallocatechin contain an additional phenolic hydroxyl group when compared to epicatechin and catechin, respectively, similar to the difference in pyrogallol compared to pyrocatechol. Catechin gallates are gallic acid esters of the catechins; an example is epigallocatechin gallate, which is commonly the most abundant ...
Amazon acquired the global television rights for J. R. R. Tolkien's The Lord of the Rings (1954–55) in November 2017. The company's streaming service, Prime Video, gave a multi-season commitment to a series based on the novel and its appendices, to be produced by Amazon Studios in association with New Line Cinema and in consultation with the Tolkien Estate. [1]
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Lord of the Rings Boxed Set by J.R.R. Tolkien. The Lord of the Rings series needs no introduction, especially not for fantasy fans. If you've only seen the movies, set aside a weekend to read the ...
Amazon acquired the global television rights for J. R. R. Tolkien's The Lord of the Rings (1954–55) in November 2017. The company's streaming service, Prime Video, gave a multi-season commitment to a series based on the novel and its appendices, to be produced by Amazon Studios in association with New Line Cinema and in consultation with the Tolkien Estate. [1]
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The Lord of the Rings: The Rings of Power is an American fantasy television series developed by J. D. Payne and Patrick McKay for the streaming service Amazon Prime Video.It is based on J. R. R. Tolkien's history of Middle-earth, primarily material from the appendices of the novel The Lord of the Rings (1954–55).