The molecule is a synthetic 36-amino acid peptide consisting of N-acetyltyrosyl, threonyl, seryl, leucyl, isoleucyl, histidyl, seryl, leucyl, isoleucyl, alpha-glutamyl, alpha-glutamyl, seryl, glutaminyl, asparaginyl, glutaminyl, glutaminyl, alpha-glutamyl, lysyl, asparaginyl, alpha-glutamyl, alpha-glutamyl, alpha-glutamyl, leucyl, leucyl, alpha-glutamyl, leucyl, alpha-aspartyl, lysyl, tryptophyl, alanyl, seryl, leucyl, tryptophyl, asparaginyl, tryptophyl, and phenylalaninamide residues joined in sequence. An HIV fusion inhibitor, it was the first of a novel class of antiretroviral drugs used in combination therapy for the treatment of HIV-1 infection. It interferes with entry of HIV into cells by binding to the gp41 sub-unit of the viral envelope glycoprotein, so inhibiting fusion of viral and cellular membranes. It has a role as a HIV fusion inhibitor.
IUPAC name: (4S)-4-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-acetamido-3-(4-hydroxyphenyl)propanoyl]amino]-3-hydroxybutanoyl]amino]-3-hydroxypropanoyl]amino]-4-methylpentanoyl]amino]-3-methylpentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-3-hydroxypropanoyl]amino]-4-methylpentanoyl]amino]-3-methylpentanoyl]amino]-4-carboxybutanoyl]amino]-4-carboxybutanoyl]amino]-3-hydroxypropanoyl]amino]-5-amino-5-oxopentanoyl]amino]-4-amino-4-oxobutanoyl]amino]-5-amino-5-oxopentanoyl]amino]-5-amino-5-oxopentanoyl]amino]-5-[[(2S)-6-amino-1-[[(2S)-4-amino-1-[[(2S)-1-[[(2S)-5-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-4-amino-1-[[(2S)-1-[[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-1-oxopropan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-1-oxohexan-2-yl]amino]-3-carboxy-1-oxopropan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-4-carboxy-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-4-carboxy-1-oxobutan-2-yl]amino]-1,5-dioxopentan-2-yl]amino]-4-carboxy-1-oxobutan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-1-oxohexan-2-yl]amino]-5-oxopentanoic acid
SMILES: CC[C@H](C)[C@H](N=C(O)[C@H](CC(C)C)N=C(O)[C@H](CO)N=C(O)[C@H](Cc1cnc[nH]1)N=C(O)[C@@H](N=C(O)[C@H](CC(C)C)N=C(O)[C@H](CO)N=C(O)[C@@H](N=C(O)[C@H](Cc1ccc(O)cc1)N=C(C)O)[C@@H](C)O)[C@@H](C)CC)C(O)=N[C@@H](CCC(=O)O)C(O)=N[C@@H](CCC(=O)O)C(O)=N[C@@H](CO)C(O)=N[C@@H](CCC(=N)O)C(O)=N[C@@H](CC(=N)O)C(O)=N[C@@H](CCC(=N)O)C(O)=N[C@@H](CCC(=N)O)C(O)=N[C@@H](CCC(=O)O)C(O)=N[C@@H](CCCCN)C(O)=N[C@@H](CC(=N)O)C(O)=N[C@@H](CCC(=O)O)C(O)=N[C@@H](CCC(=N)O)C(O)=N[C@@H](CCC(=O)O)C(O)=N[C@@H](CC(C)C)C(O)=N[C@@H](CC(C)C)C(O)=N[C@@H](CCC(=O)O)C(O)=N[C@@H](CC(C)C)C(O)=N[C@@H](CC(=O)O)C(O)=N[C@@H](CCCCN)C(O)=N[C@@H](Cc1c[nH]c2ccccc12)C(O)=N[C@@H](C)C(O)=N[C@@H](CO)C(O)=N[C@@H](CC(C)C)C(O)=N[C@@H](Cc1c[nH]c2ccccc12)C(O)=N[C@@H](CC(=N)O)C(O)=N[C@@H](Cc1c[nH]c2ccccc12)C(O)=N[C@@H](Cc1ccccc1)C(=N)O
SELFIES: [C][C][C@H1][Branch1][C][C][C@H1][Branch2][=Branch2][Branch2][N][=C][Branch1][C][O][C@H1][Branch1][#Branch1][C][C][Branch1][C][C][C][N][=C][Branch1][C][O][C@H1][Branch1][Ring1][C][O][N][=C][Branch1][C][O][C@H1][Branch1][=Branch2][C][C][=C][N][=C][NH1][Ring1][Branch1][N][=C][Branch1][C][O][C@@H1][Branch2][Branch1][P][N][=C][Branch1][C][O][C@H1][Branch1][#Branch1][C][C][Branch1][C][C][C][N][=C][Branch1][C][O][C@H1][Branch1][Ring1][C][O][N][=C][Branch1][C][O][C@@H1][Branch2][Ring1][O][N][=C][Branch1][C][O][C@H1][Branch1][=N][C][C][=C][C][=C][Branch1][C][O][C][=C][Ring1][#Branch1][N][=C][Branch1][C][C][O][C@@H1][Branch1][C][C][O][C@@H1][Branch1][C][C][C][C][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][Branch1][C][O][=N][C@@H1][Branch1][Ring1][C][O][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=N][O][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch1][C][C][=Branch1][C][=N][O][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=N][O][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=N][O][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][Branch1][C][O][=N][C@@H1][Branch1][=Branch1][C][C][C][C][N][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch1][C][C][=Branch1][C][=N][O][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=N][O][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch1][C][C][Branch1][C][C][C][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch1][C][C][Branch1][C][C][C][C][Branch1][C][O][=N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch1][C][C][Branch1][C][C][C][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C][Branch1][C][O][=N][C@@H1][Branch1][=Branch1][C][C][C][C][N][C][Branch1][C][O][=N][C@@H1][Branch1][#C][C][C][=C][NH1][C][=C][C][=C][C][=C][Ring1][=Branch2][Ring1][=Branch1][C][Branch1][C][O][=N][C@@H1][Branch1][C][C][C][Branch1][C][O][=N][C@@H1][Branch1][Ring1][C][O][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch1][C][C][Branch1][C][C][C][C][Branch1][C][O][=N][C@@H1][Branch1][#C][C][C][=C][NH1][C][=C][C][=C][C][=C][Ring1][=Branch2][Ring1][=Branch1][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch1][C][C][=Branch1][C][=N][O][C][Branch1][C][O][=N][C@@H1][Branch1][#C][C][C][=C][NH1][C][=C][C][=C][C][=C][Ring1][=Branch2][Ring1][=Branch1][C][Branch1][C][O][=N][C@@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=N][O]
InChI: InChI=1S/C204H301N51O64/c1-20-102(15)166(253-195(310)137(75-100(11)12)239-200(315)150(93-258)251-190(305)143(82-112-90-215-95-219-112)248-203(318)167(103(16)21-2)254-196(311)138(76-101(13)14)240-201(316)151(94-259)252-204(319)168(105(18)260)255-197(312)139(221-106(19)261)78-108-45-47-113(262)48-46-108)202(317)233-131(58-68-164(280)281)178(293)228-130(57-67-163(278)279)182(297)250-149(92-257)198(313)232-125(52-62-155(210)266)179(294)245-145(84-157(212)268)191(306)229-124(51-61-154(209)265)175(290)224-122(49-59-152(207)263)173(288)226-126(53-63-159(270)271)176(291)222-120(43-31-33-69-205)172(287)244-144(83-156(211)267)192(307)231-127(54-64-160(272)273)177(292)225-123(50-60-153(208)264)174(289)227-128(55-65-161(274)275)180(295)235-134(72-97(5)6)185(300)237-133(71-96(3)4)184(299)230-129(56-66-162(276)277)181(296)236-135(73-98(7)8)187(302)247-147(86-165(282)283)194(309)223-121(44-32-34-70-206)171(286)241-140(79-109-87-216-117-40-28-25-37-114(109)117)183(298)220-104(17)170(285)249-148(91-256)199(314)238-136(74-99(9)10)186(301)242-142(81-111-89-218-119-42-30-27-39-116(111)119)189(304)246-146(85-158(213)269)193(308)243-141(80-110-88-217-118-41-29-26-38-115(110)118)188(303)234-132(169(214)284)77-107-35-23-22-24-36-107/h22-30,35-42,45-48,87-90,95-105,120-151,166-168,216-218,256-260,262H,20-21,31-34,43-44,49-86,91-94,205-206H2,1-19H3,(H2,207,263)(H2,208,264)(H2,209,265)(H2,210,266)(H2,211,267)(H2,212,268)(H2,213,269)(H2,214,284)(H,215,219)(H,220,298)(H,221,261)(H,222,291)(H,223,309)(H,224,290)(H,225,292)(H,226,288)(H,227,289)(H,228,293)(H,229,306)(H,230,299)(H,231,307)(H,232,313)(H,233,317)(H,234,303)(H,235,295)(H,236,296)(H,237,300)(H,238,314)(H,239,315)(H,240,316)(H,241,286)(H,242,301)(H,243,308)(H,244,287)(H,245,294)(H,246,304)(H,247,302)(H,248,318)(H,249,285)(H,250,297)(H,251,305)(H,252,319)(H,253,310)(H,254,311)(H,255,312)(H,270,271)(H,272,273)(H,274,275)(H,276,277)(H,278,279)(H,280,281)(H,282,283)/t102-,103-,104-,105+,120-,121-,122-,123-,124-,125-,126-,127-,128-,129-,130-,131-,132-,133-,134-,135-,136-,137-,138-,139-,140-,141-,142-,143-,144-,145-,146-,147-,148-,149-,150-,151-,166-,167-,168-/m0/s1
Topological polar surface area: 1900.0
XLogP: -14.7